hidden left pane like max

[ziziran]

how to hidden left pane like max 

this is  what i do： the splitter can not go to position -1.

ziziran_0-1643982361997.png

but in the max 

ziziran_1-1643982420808.png

ziziran_2-1643982437830.png

the splitter can hidden

[Yamaeda]

Change the Pane Scrollbar property from Off when running, to Always Off. Then you can move it all the way. I guess it reserves space for edit mode.