What keyboard shortcut can be used to spell check the entire document?

There isn't a universal keyboard shortcut to spell check an entire document. The shortcut depends on the specific software you're using.

Here are some common ones:

* Microsoft Word: F7

* Google Docs: Ctrl + Shift + I (Windows) or Cmd + Shift + I (Mac)

* Apple Pages: Option + Command + L

If you're not sure what the shortcut is for your program, look for a "Spell Check" or "Check Spelling" option in the menu or toolbar.