Modify properties of selected window or gadget
General: Set id, name, position, size and flags.
Setting flags under Windows requires 2 actions. First mark or unmark the checkbox on the left, then select the line.
Items: Add, delete and name items or columns
Images&Fonts: Add and delete images
Add, select and delete fonts
See Set Fonts
Extra: Add and delete Tooltips. Set anchors for gadget resize
Colours: Colourize windows and gadgets