Yes, but you would need to define the syntax coloring. See
C:\Program Files\UltraRecall\Editor\Schemas\
LexFormat.txt has some documentation, and the existing .schclass files would be examples for other languages.
To add a template for a particular document type, import a file and move to Templates. It should show in the Insert Child/Sibling menus after that.
https://kinook.com/UltraRecall/Manua...dtemplates.htm