The proposed section of the tool.xml file should be named "repository".
The purpose of the section is to capture the exact version of the code that generated the Rappture graphical user interface and simulation application. The need for the repository section of the tool.xml file stems from the current inability to identify the version of code (both rappture and simulation) that produced certain output. By adding the repository section, the first steps will be taken to allowing comparitive analysis of results.

Below is an example of the proposed section of code to be added to all tool.xml files:

<tool>
    <repository>
        <rappture>
            <date>$Date: 2006-11-08 15:05:19 -0500 (Wed, 08 Nov 2006) $</date>
            <revision>$Rev: 542 $</revision>
            <url>$URL: https://kearneyd@repo.nanohub.org/svn/rappture/trunk/src/core/RpLibrary.cc $</url>
        </rappture>
        <application>
            <date>$Date: 2006-11-08 15:52:23 -0500 (Wed, 08 Nov 2006) $</date>
            <revision>$Rev: 4 $</revision>
            <url>$URL: https://repo.nanohub.org/svn/app-nanocmos/trunk/rappture/nanocmos.pl  $q</url>
        </application>
    </repository>
</tool>

The repository section will contain two elements detailing information specific to the simulator. The first section is named "rappture". The <rappture> section contains the date, repository revision and url of the code that generated the graphical user interface and rappture library.