on "hidewindow"

I don't understand that "hidewindow" is not a general setting but a section setting.

Could anyone explain?

Does this mean that I can hide one section and see the next one? I don't understand.

From the docs:

HideWindow: Hides the installer.

So it hides the installer window (not sections!) behind other existing windows. Use BringToFront to show it again.

(BTW, hiding sections can be done with SectionSetText.)

-Hendri.