Where can I find "$set" parameters ?

[BDY35]

Hello.

Almost anybody knows about "$set: get version" in ZWC search filed (to display the current version of Zimbra) but is there other such options ?

I don't ask about all usual search options but about $set other possibilities.

For example, is it possible for a user to know which MBS manages his/her data ?
Something like $set: get mbs ?

Thank you.

Bertrand