To create a custom export format that exports tiddlers as their raw body text:

1. Create a tiddler with the following fields:
   • tags: $:/tags/Exporter
   • description: Description of this exporter
   • extension: Default file extension for this export format (including the dot; for example .tid)
2. Set the following content:

\define renderContent()
{{{ $(exportFilter)$ ||$:/core/templates/plain-text-tiddler}}}
\end
<<renderContent>>

The variable exportFilter contains a filter defining which tiddlers should be exported.