Hi Fabio,
This is a very standard feature of Capella. I can see to things:
- Have a look at this thread:
https://polarsys.org/forums/index.php/mv/msg/946/3582/ - And also: You may have to “Unblock” this file: capella\eclipse\plugins\org.eclipse.nebula.widgets.richtext_1.2.0…\org\eclipse\nebula\widgets\richtext\resources\template.html (see the image attached).
Let me know if it fixed your issue.

