Hi Tristran
The templates that we use in the core for static rendering generally include a definition of `tv-wikilink-template` at the top of the template. For example, $:/core/templates/static.tiddler.html starts with the following line:
\define tv-wikilink-template() $uri_doubleencoded$.html
If you’re using a custom template then you can modify that declaration according to the instructions here:
Alternatively, you can omit the definition from the template and instead specify the variable as part of the render command.
Best wishes
Jeremy