sc_include

Questions about the operation of sc_include correctly
I do not work well:
I go to libraries, I include a new file in my project (menu.php)
Then in the app (form) I’ll libraries and active.
In onScriptInit:
sc_include (menu.php);

I do not work.
What am I doing wrong?

You need to go to application -> libraries and set the checkbox of the librarie(s) you want to include.

Sorry, not working.

Can you give some more info like errormessages?