How do I erase drawing from LSP channels

[nzlongfellow]

Hi, I have ended up with drawings attached to a channel that I want to change. Can't find the delete.
Clr screen does not do it for me. What's the answer please?

 

[arw01]

right click on the controller or the channel that is wrong, click on erase channel images

 

[nzlongfellow]

Wow, I looked everywhere and didn't see that. Back to productive work now Yeah.....