Vertical Text for Vertical Sidebar?

Is it possible to have vertical text displayed in a vertical sidebar? In other words, to have a vertical toolbar which, instead of displaying icons, would display the name of the menus in vertical orientation.

I've tested all of the current settings, and I've been able to allow just the text names of the menus instead of the icons, but the names are always displayed horizontally, which is useless for a vertical sidebar.

If this isn't already a feature, does anybody else think this would be a good feature?

Sounds good. Hopefully the developer can add this feature without too much trouble.

Yuri, can you do it?