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### 4.1 Introduction

When there are a lot of units to document, the command-line can be rather long. On some operating systems, this is a problem, as the length of the command-line easily exceeds the maximum length of command-line options supported by the OS. Also, command-lines are difficult to read and/or parse. fpdoc has always supported reading options from a file, but this is not very structured and difficult to handle in e.g. an IDE.

Therefor it is possible to write a project file. The project file is an XML file that describes an fpdoc project. The XML file contains only a few tag names.

In general, it looks as follows:

<?xml version="1.0" encoding="utf-8"?>
<docproject>
<options>
<option name="ostarget" value="Linux"/>
<option name="cputarget" value="x86_64"/>
<option name="show-private" value="false"/>
<option name="stop-on-parser-error" value="false"/>
</options>
<packages>
<package name="rtl" output="rtl" content="rtl.xct">
<units>
<unit file="../rtl/objpas/objpas.pp"
options="-dHASINTF"/>
<unit file="../rtl/objpas/types.pp"
options=""/>
</units>
<descriptions>
<description file="rtl.xml"/>
<description file="system.xml"/>
</descriptions>
</package>
</packages>
</docproject>

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