Hide cell in Layout

[fendrikat]

Hi,

…I really would want to hide completely 2 cells in a “3U” layout and only on demand have them “slide out”. From what I see and read, that seems not to be possible, there are always at least some of the cells visible:

Any help appreciated,

thanks a lot,

Frank

[sematik]

You may collapse these cells:
snippet.dhtmlx.com/98fbd514c