Many of Simutrans' small windows (or dialogs) have a "sticky" button or a "pin" button.
What exactly is meant to happen when I activate it? One might think that the dialog would stick to the map and follow it like a geostationary satellite, but nothing really happens.
Is this function broken and needs to be fixed? ;D
Normally, when you hit 'backspace' all windows will close. Any windows that are 'pinned' when backspace is pressed will not close.
I do quite like your idea of it staying at the same location on the map even if you pan around, like a geostationary satellite, perhaps an extension request?