Missing tooltips

This buttons here doesn`t show tooltips. I don`t know what they are good for.

Hi Tiles,

The second pic:-

Those are selection methods. Rectangle selection, circular(circle) selection, drag out funny shape selection(not sure what correct name for that is lol), then selecting by drawing straight lines around the selection (last click on first point made).

Probably better to experiment a bit by selecting one from the drop down menu, then clicking/dragging in view port.

The first pic,

Shows (renders in view) double sided polygons, or single sided(outside or inside)

Thanks Steve