A button to hide a toolbar not close it

I can't seem to find the commands that will hide a toolbar instead of going closing it.

Toolbar NAME=Favorites TOGGLE STATE=left

The above works but is slow at reopening agian.

There is no command to hide a toolbar - opening and closing them is instant here - what's on the toolbar that is so slow?

e.g. are there any items that need to be generated 'dynamically' like any Go FOLDERCONTENT or Drives buttons that are 'rooted' on the main part of the toolbar???

Yeah maybe to much so I removed some and it is a lot faster now.