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<TITLE>2. System Architecture</TITLE>
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HREF="developersguidenode2.html">1. Introduction</A>
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<H1><A NAME="SECTION00300000000000000000">
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2. System Architecture</A>
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In this chapter a high level overview of the TCM software system is presented.
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In figure <A HREF="developersguidenode3.html#fig:subsystems">2.1</A> TCM is logically decomposed into a number of
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subsystems. Each subsystem is then worked out further as an UML static
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structure diagram (SSD) in subsequent figures.
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All classes in these SSDs also exist in the source code, but not every
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source code class is mentioned in these SSDs. The classes that are not
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mentioned are either implementation classes (data structures, user
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interface widgets etc.)
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or they are specializations of the classes that are mentioned for specific editors.
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The same applies to the relationships between the classes. Note also that we do not
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show the attributes and operations of the classes because that would clutter up the
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diagrams too much. But a complete and accurate
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overview of all classes of the source code and their attributes, operations
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and specialization relationships has been
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generated automatically and is described in chapter <A HREF="developersguidenode6.html#chap:class_hierarchy">5</A>.
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This system architecture is rather conceptual, it does not say exactly how
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the source code is organized physically. In chapter <A HREF="developersguidenode4.html#chap:src_organization">3</A>
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the physical source code structure is presented.
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<DIV ALIGN="CENTER"><A NAME="fig:subsystems"> </A><A NAME="53"> </A>
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<CAPTION><STRONG>Figure 2.1:</STRONG>
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ALT="\includegraphics[angle=90,height=6in]{p/FSubsystems.eps}"></DIV></TD></TR>
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<DIV ALIGN="CENTER"><A NAME="fig:editors"> </A><A NAME="60"> </A>
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<CAPTION><STRONG>Figure 2.2:</STRONG>
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Editor subject areas.</CAPTION>
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ALT="\includegraphics[angle=90,height=7.5in]{p/FEditorsSA.eps}"></DIV></TD></TR>
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<DIV ALIGN="CENTER"><A NAME="fig:shapes"> </A><A NAME="67"> </A>
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<CAPTION><STRONG>Figure 2.3:</STRONG>
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Shapes and Graph subject areas.</CAPTION>
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ALT="\includegraphics[angle=90,height=7.5in]{p/FShapeSA.eps}"></DIV></TD></TR>
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<DIV ALIGN="CENTER"><A NAME="fig:table"> </A><A NAME="74"> </A>
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<CAPTION><STRONG>Figure 2.4:</STRONG>
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Table subject area.</CAPTION>
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ALT="\includegraphics[angle=90,width=\textwidth]{p/FTableSA.eps}"></DIV></TD></TR>
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<DIV ALIGN="CENTER"><A NAME="fig:viewer"> </A><A NAME="81"> </A>
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<CAPTION><STRONG>Figure 2.5:</STRONG>
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Viewer subject area.</CAPTION>
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<DIV ALIGN="CENTER"><A NAME="fig:printer"> </A><A NAME="88"> </A>
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<CAPTION><STRONG>Figure 2.6:</STRONG>
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Printer subject area.</CAPTION>
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<DIV ALIGN="CENTER"><A NAME="fig:windows"> </A><A NAME="95"> </A>
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<CAPTION><STRONG>Figure 2.7:</STRONG>
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Window subject area.</CAPTION>
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<I>Henk van de Zandschulp</I>
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<BR><I>2003-01-07</I>
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