If you require GM assistance, you can petition for help as follows: 

petition X 
A standard petition command might look like the following: 

petition Help me, I'm stuck in Omni-1, and my character's left arm has 
disappeared! I don't know where I dropped it, or that I could drop it.  

Show frame rate   - Ctrl+Alt+F 
Submit bug report - Ctrl+Alt+Shift+F9