ArcaOS 5.x Keyboard Shortcuts

Boot / Startup
Enter the key combination when you see "OS/2" in the upper left corner of your screen during boot-up

Not sure how it works
Shift + TAB Backtab

ALT + (Keypad 1 + 2) Insert page break (form feed) in text

Shift + ALT + Backspace Redo (undoes last Undo)

Ctrl + Spacebar Select one object, deselect others

Shift + F8 Switch between single and multiple selection

Ctrl + h Viewed Pages - Display a list of all of the topics you have read in a Helpsession