Implemented a proper state machine for tap and drag

processing. This fixes several problems:
* Double tap and drag now works. (Problem reported by Andrew Pimlott
  <andrew@pimlott.net>.)
* Locked drags are handled correctly, even for button 2 and 3
  tap-and-drag operations.
* The [LR][TB]CornerButton and TapButton[123] parameters now work also
  for button values > 3.
* The old code was too hard to understand.

1 files changed, 1244 insertions, 0 deletions

diff --git a/docs/tapndrag.dia b/docs/tapndrag.dia
new file mode 100644
index 0000000..52b2544
--- /dev/null
+++ b/docs/tapndrag.dia
@@ -0,0 +1,1244 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<dia:diagram xmlns:dia="http://www.lysator.liu.se/~alla/dia/">
+  <dia:diagramdata>
+    <dia:attribute name="background">
+      <dia:color val="#ffffff"/>
+    </dia:attribute>
+    <dia:attribute name="paper">
+      <dia:composite type="paper">
+        <dia:attribute name="name">
+          <dia:string>#A4#</dia:string>
+        </dia:attribute>
+        <dia:attribute name="tmargin">
+          <dia:real val="2.8222"/>
+        </dia:attribute>
+        <dia:attribute name="bmargin">
+          <dia:real val="2.8222"/>
+        </dia:attribute>
+        <dia:attribute name="lmargin">
+          <dia:real val="2.8222"/>
+        </dia:attribute>
+        <dia:attribute name="rmargin">
+          <dia:real val="2.8222"/>
+        </dia:attribute>
+        <dia:attribute name="is_portrait">
+          <dia:boolean val="true"/>
+        </dia:attribute>
+        <dia:attribute name="scaling">
+          <dia:real val="0.459"/>
+        </dia:attribute>
+        <dia:attribute name="fitto">
+          <dia:boolean val="false"/>
+        </dia:attribute>
+      </dia:composite>
+    </dia:attribute>
+    <dia:attribute name="grid">
+      <dia:composite type="grid">
+        <dia:attribute name="width_x">
+          <dia:real val="1"/>
+        </dia:attribute>
+        <dia:attribute name="width_y">
+          <dia:real val="1"/>
+        </dia:attribute>
+        <dia:attribute name="visible_x">
+          <dia:int val="1"/>
+        </dia:attribute>
+        <dia:attribute name="visible_y">
+          <dia:int val="1"/>
+        </dia:attribute>
+      </dia:composite>
+    </dia:attribute>
+    <dia:attribute name="guides">
+      <dia:composite type="guides">
+        <dia:attribute name="hguides"/>
+        <dia:attribute name="vguides"/>
+      </dia:composite>
+    </dia:attribute>
+  </dia:diagramdata>
+  <dia:layer name="Background" visible="true">
+    <dia:object type="UML - Usecase" version="0" id="O0">
+      <dia:attribute name="obj_pos">
+        <dia:point val="10.1412,5.79119"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="10.1412,5.79119;13.7316,7.79119"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="10.1412,5.79119"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="3.5904"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="2"/>
+      </dia:attribute>
+      <dia:attribute name="text_outside">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="collaboration">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Start#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="11.9364,7.03119"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Usecase" version="0" id="O1">
+      <dia:attribute name="obj_pos">
+        <dia:point val="10.3114,13.0947"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="10.3114,13.0947;13.5614,15.0947"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="10.3114,13.0947"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="3.25"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="2"/>
+      </dia:attribute>
+      <dia:attribute name="text_outside">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="collaboration">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#1#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="11.9364,14.3347"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Usecase" version="0" id="O2">
+      <dia:attribute name="obj_pos">
+        <dia:point val="10.3114,19.6912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="10.3114,19.6912;13.5614,21.6912"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="10.3114,19.6912"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="3.25"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="2"/>
+      </dia:attribute>
+      <dia:attribute name="text_outside">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="collaboration">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#2#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="11.9364,20.9312"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Usecase" version="0" id="O3">
+      <dia:attribute name="obj_pos">
+        <dia:point val="10.3114,26.593"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="10.3114,26.593;13.5614,28.593"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="10.3114,26.593"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="3.25"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="2"/>
+      </dia:attribute>
+      <dia:attribute name="text_outside">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="collaboration">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#3#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="11.9364,27.833"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Usecase" version="0" id="O4">
+      <dia:attribute name="obj_pos">
+        <dia:point val="19.5912,13.0947"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="19.5912,13.0947;23.5512,15.0947"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="19.5912,13.0947"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="3.96"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="2"/>
+      </dia:attribute>
+      <dia:attribute name="text_outside">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="collaboration">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Move#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="21.5712,14.3347"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Usecase" version="0" id="O5">
+      <dia:attribute name="obj_pos">
+        <dia:point val="19.8288,26.593"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="19.8288,26.593;23.3136,28.593"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="19.8288,26.593"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="3.4848"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="2"/>
+      </dia:attribute>
+      <dia:attribute name="text_outside">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="collaboration">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#Drag#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="21.5712,27.833"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Line" version="0" id="O6">
+      <dia:attribute name="obj_pos">
+        <dia:point val="11.9364,7.79119"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="11.1364,7.74119;12.7364,13.1447"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="11.9364,7.79119"/>
+        <dia:point val="11.9364,13.0947"/>
+      </dia:attribute>
+      <dia:attribute name="numcp">
+        <dia:int val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O0" connection="6"/>
+        <dia:connection handle="1" to="O1" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Line" version="0" id="O7">
+      <dia:attribute name="obj_pos">
+        <dia:point val="11.9364,15.0947"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="11.1364,15.0447;12.7364,19.7412"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="11.9364,15.0947"/>
+        <dia:point val="11.9364,19.6912"/>
+      </dia:attribute>
+      <dia:attribute name="numcp">
+        <dia:int val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O1" connection="6"/>
+        <dia:connection handle="1" to="O2" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Line" version="0" id="O8">
+      <dia:attribute name="obj_pos">
+        <dia:point val="11.9364,21.6912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="11.1364,21.6412;12.7364,26.643"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="11.9364,21.6912"/>
+        <dia:point val="11.9364,26.593"/>
+      </dia:attribute>
+      <dia:attribute name="numcp">
+        <dia:int val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O2" connection="6"/>
+        <dia:connection handle="1" to="O3" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Line" version="0" id="O9">
+      <dia:attribute name="obj_pos">
+        <dia:point val="13.5614,14.0947"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="13.5114,13.2947;19.6412,14.8947"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="13.5614,14.0947"/>
+        <dia:point val="19.5912,14.0947"/>
+      </dia:attribute>
+      <dia:attribute name="numcp">
+        <dia:int val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O1" connection="4"/>
+        <dia:connection handle="1" to="O4" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Arc" version="0" id="O10">
+      <dia:attribute name="obj_pos">
+        <dia:point val="21.5712,13.0947"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="12.7194,6.80557;21.6405,13.164"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="21.5712,13.0947"/>
+        <dia:point val="13.2058,7.49829"/>
+      </dia:attribute>
+      <dia:attribute name="curve_distance">
+        <dia:real val="0.341908"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O4" connection="1"/>
+        <dia:connection handle="1" to="O0" connection="7"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - BezierLine" version="0" id="O11">
+      <dia:attribute name="obj_pos">
+        <dia:point val="22.8032,26.8859"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="13.5274,5.99668;26.5695,26.9559"/>
+      </dia:attribute>
+      <dia:attribute name="bez_points">
+        <dia:point val="22.8032,26.8859"/>
+        <dia:point val="31.6608,15.1412"/>
+        <dia:point val="23.0912,8.6412"/>
+        <dia:point val="13.7316,6.79119"/>
+      </dia:attribute>
+      <dia:attribute name="corner_types">
+        <dia:enum val="0"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O5" connection="2"/>
+        <dia:connection handle="3" to="O0" connection="4"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - BezierLine" version="0" id="O12">
+      <dia:attribute name="obj_pos">
+        <dia:point val="10.7873,19.9841"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="5.5781,6.06783;10.8564,20.0532"/>
+      </dia:attribute>
+      <dia:attribute name="bez_points">
+        <dia:point val="10.7873,19.9841"/>
+        <dia:point val="3.64113,15.3912"/>
+        <dia:point val="4.39118,9.99119"/>
+        <dia:point val="10.1412,6.79119"/>
+      </dia:attribute>
+      <dia:attribute name="corner_types">
+        <dia:enum val="0"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O2" connection="0"/>
+        <dia:connection handle="3" to="O0" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - BezierLine" version="0" id="O13">
+      <dia:attribute name="obj_pos">
+        <dia:point val="10.3114,27.593"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="7.19736,19.9459;10.6968,27.657"/>
+      </dia:attribute>
+      <dia:attribute name="bez_points">
+        <dia:point val="10.3114,27.593"/>
+        <dia:point val="6.29118,26.143"/>
+        <dia:point val="6.16138,22.6412"/>
+        <dia:point val="10.3114,20.6912"/>
+      </dia:attribute>
+      <dia:attribute name="corner_types">
+        <dia:enum val="0"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O3" connection="3"/>
+        <dia:connection handle="3" to="O2" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="UML - Note" version="0" id="O14">
+      <dia:attribute name="obj_pos">
+        <dia:point val="8.14118,41.0412"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="8.09118,40.9912;25.3976,47.5912"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="8.14118,41.0412"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="17.2064"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="6.5"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#T  : Touch
+R  : Release
+TO : Timeout
+M  : Finger movement
+[U]: Generate button up event
+[D]: Generate button down event
+L  : Locked drags enabled#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="8.49118,42.2877"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="0"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O15">
+      <dia:attribute name="obj_pos">
+        <dia:point val="11.1912,10.4912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="10.958,9.89469;11.4244,10.6947"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#T#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="11.1912,10.4912"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O16">
+      <dia:attribute name="obj_pos">
+        <dia:point val="11.1912,24.4412"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="10.958,23.8447;11.4244,24.6447"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#T#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="11.1912,24.4412"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O17">
+      <dia:attribute name="obj_pos">
+        <dia:point val="17.4412,10.6912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="17.2036,10.0947;17.6788,10.8947"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#R#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="17.4412,10.6912"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Line" version="0" id="O18">
+      <dia:attribute name="obj_pos">
+        <dia:point val="13.5614,27.593"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="13.5114,26.793;19.8788,28.393"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="13.5614,27.593"/>
+        <dia:point val="19.8288,27.593"/>
+      </dia:attribute>
+      <dia:attribute name="numcp">
+        <dia:int val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O3" connection="4"/>
+        <dia:connection handle="1" to="O5" connection="3"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O19">
+      <dia:attribute name="obj_pos">
+        <dia:point val="11.1412,16.6912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="10.6132,16.0947;11.6692,17.6947"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#R
+[D]#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="11.1412,16.6912"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O20">
+      <dia:attribute name="obj_pos">
+        <dia:point val="5.89118,24.0912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.82638,23.4947;6.95598,25.0947"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#R
+[U,D]#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="5.89118,24.0912"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O21">
+      <dia:attribute name="obj_pos">
+        <dia:point val="16.3912,13.6912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="14.53,13.0947;18.2524,13.8947"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#TO or M#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="16.3912,13.6912"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O22">
+      <dia:attribute name="obj_pos">
+        <dia:point val="16.517,27.1577"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="14.6558,26.5612;18.3782,27.3612"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#TO or M#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="16.517,27.1577"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O23">
+      <dia:attribute name="obj_pos">
+        <dia:point val="4.59118,12.7912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="4.06318,12.1947;5.11918,13.7947"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#TO
+[U]#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="4.59118,12.7912"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O24">
+      <dia:attribute name="obj_pos">
+        <dia:point val="24.4912,17.8412"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="22.9204,17.2447;26.062,18.8447"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#R &amp; !L
+[U]#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="24.4912,17.8412"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Usecase" version="0" id="O25">
+      <dia:attribute name="obj_pos">
+        <dia:point val="19.9462,32.4912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="19.9462,32.4912;23.1962,34.4912"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="19.9462,32.4912"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="3.25"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="2"/>
+      </dia:attribute>
+      <dia:attribute name="text_outside">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="collaboration">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#4#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="21.5712,33.7312"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="UML - Usecase" version="0" id="O26">
+      <dia:attribute name="obj_pos">
+        <dia:point val="19.9462,38.0412"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="19.9462,38.0412;23.1962,40.0412"/>
+      </dia:attribute>
+      <dia:attribute name="elem_corner">
+        <dia:point val="19.9462,38.0412"/>
+      </dia:attribute>
+      <dia:attribute name="elem_width">
+        <dia:real val="3.25"/>
+      </dia:attribute>
+      <dia:attribute name="elem_height">
+        <dia:real val="2"/>
+      </dia:attribute>
+      <dia:attribute name="text_outside">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="collaboration">
+        <dia:boolean val="false"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#5#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Helvetica"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="21.5712,39.2812"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Line" version="0" id="O27">
+      <dia:attribute name="obj_pos">
+        <dia:point val="21.5712,28.593"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="20.7712,28.543;22.3712,32.5412"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="21.5712,28.593"/>
+        <dia:point val="21.5712,32.4912"/>
+      </dia:attribute>
+      <dia:attribute name="numcp">
+        <dia:int val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O5" connection="6"/>
+        <dia:connection handle="1" to="O25" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Line" version="0" id="O28">
+      <dia:attribute name="obj_pos">
+        <dia:point val="21.5712,34.4912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="20.7712,34.4412;22.3712,38.0912"/>
+      </dia:attribute>
+      <dia:attribute name="conn_endpoints">
+        <dia:point val="21.5712,34.4912"/>
+        <dia:point val="21.5712,38.0412"/>
+      </dia:attribute>
+      <dia:attribute name="numcp">
+        <dia:int val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O25" connection="6"/>
+        <dia:connection handle="1" to="O26" connection="1"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O29">
+      <dia:attribute name="obj_pos">
+        <dia:point val="19.8108,30.5912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="18.5084,29.9947;21.1132,30.7947"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#R &amp; L#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="19.8108,30.5912"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O30">
+      <dia:attribute name="obj_pos">
+        <dia:point val="20.7108,36.3412"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="20.4776,35.7447;20.944,36.5447"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#T#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="20.7108,36.3412"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O31">
+      <dia:attribute name="obj_pos">
+        <dia:point val="26.1108,32.1912"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="25.6092,31.5947;26.6124,33.9947"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#TO
+or
+M#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="26.1108,32.1912"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+    <dia:object type="Standard - BezierLine" version="0" id="O32">
+      <dia:attribute name="obj_pos">
+        <dia:point val="22.7202,38.3341"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="22.2883,27.6265;25.2621,38.4047"/>
+      </dia:attribute>
+      <dia:attribute name="bez_points">
+        <dia:point val="22.7202,38.3341"/>
+        <dia:point val="26.1462,35.2912"/>
+        <dia:point val="25.9108,30.5912"/>
+        <dia:point val="22.8032,28.3001"/>
+      </dia:attribute>
+      <dia:attribute name="corner_types">
+        <dia:enum val="0"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O26" connection="2"/>
+        <dia:connection handle="3" to="O5" connection="7"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - BezierLine" version="0" id="O33">
+      <dia:attribute name="obj_pos">
+        <dia:point val="23.1962,39.0412"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="13.0354,5.28572;30.6228,39.1017"/>
+      </dia:attribute>
+      <dia:attribute name="bez_points">
+        <dia:point val="23.1962,39.0412"/>
+        <dia:point val="32.9766,36.6412"/>
+        <dia:point val="36.0412,2.59119"/>
+        <dia:point val="13.2058,6.08408"/>
+      </dia:attribute>
+      <dia:attribute name="corner_types">
+        <dia:enum val="0"/>
+        <dia:enum val="0"/>
+      </dia:attribute>
+      <dia:attribute name="line_width">
+        <dia:real val="0.1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow">
+        <dia:enum val="1"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_length">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:attribute name="end_arrow_width">
+        <dia:real val="0.8"/>
+      </dia:attribute>
+      <dia:connections>
+        <dia:connection handle="0" to="O26" connection="4"/>
+        <dia:connection handle="3" to="O0" connection="2"/>
+      </dia:connections>
+    </dia:object>
+    <dia:object type="Standard - Text" version="0" id="O34">
+      <dia:attribute name="obj_pos">
+        <dia:point val="29.4412,22.8412"/>
+      </dia:attribute>
+      <dia:attribute name="obj_bb">
+        <dia:rectangle val="28.9132,22.2447;29.9692,23.8447"/>
+      </dia:attribute>
+      <dia:attribute name="text">
+        <dia:composite type="text">
+          <dia:attribute name="string">
+            <dia:string>#R
+[U]#</dia:string>
+          </dia:attribute>
+          <dia:attribute name="font">
+            <dia:font name="Courier"/>
+          </dia:attribute>
+          <dia:attribute name="height">
+            <dia:real val="0.8"/>
+          </dia:attribute>
+          <dia:attribute name="pos">
+            <dia:point val="29.4412,22.8412"/>
+          </dia:attribute>
+          <dia:attribute name="color">
+            <dia:color val="#000000"/>
+          </dia:attribute>
+          <dia:attribute name="alignment">
+            <dia:enum val="1"/>
+          </dia:attribute>
+        </dia:composite>
+      </dia:attribute>
+    </dia:object>
+  </dia:layer>
+</dia:diagram>