 source code editing, you can call <TT>ez</TT> from the EusLisp.
The screen editor ez communicates with EusLisp through message-queues.
If you have an ez process already running in parallel with the EusLisp,
<B>ez</B> restarts ez and it gains the terminal control. 
By issuing esc-P or esc-M commands in ez,
texts are sent back and evaluated by EusLisp.
This is useful for the debugging since entire file does not need to be
loaded when you add a little modification to the file.
Similar function is available on