Collapse or Minimize Toolbars instead of closing them

Is there away to just Collapse or Minimize your toolbars (either all or individually) instead of closing them??

There are times that I'd like to have more space for the the lists but the toolbars take up a lot of room. I know I can close them individually but then have to go back in an reopen them again, one at a time. Too much trouble.
I am using Directory Opus V.12.30

Use the Toolbar command for this, e.g.

Toolbar NAME=Menu TOGGLE!Documents/Toolbar.htm