F1 function is
to help
and is the support center
Function
The F1 function opens the AutoCAD Help window. The F12 key Toggles Dynamic Input on and off when needing it.
Most keyboards have 12 function keys. F1-F12 (all the keys with the letter 'F' and then a number).
F1 shows the help in MS Excel. Infact, F1 key is for help in all application.
The function key 'F1' is universally accepted as the 'help' key.
Normally, pressing the F1 key will get help in most windows-based programs.
f1 f2 f3 f4 f5
f1 f2 f3 f4 f5
F1