How to make my own ctrl+j snippets?



Hello all.

I’ve noticed that when standing in a expression field in an activity in uipath, you can press ctrl+j to insert small snippets (different from the snippets in the library).
The default snippet are somewhat limited usefull, but the feature seams good.

However i cannot find away to add my own snippets to this list.
I’ve tried searching the dokumentation, the forum, and google, but not luck
Anyone knows if this is possible and how this is done?