Context and profiles

First of all this is my first post so i would love to have some feedback on how to make it better.
I have been reeding a lot about context and profile sistem in order to get the best from cursor, as i use ir for my personal company.
Is there is a topic about it and i didnt find it?

I want to share what i found more interesting:

About XML (dont know really where to use them properly in cursor)

Pre prompt: