Default Mac keyboard shortcuts

I made an accidental discovery while typing in a form field in Safari: Typing control-B moves the cursor backwards in the field. By experimenting around I discovered that this key combination works in other programs too, and that control-F moves the cursor forwards.

This has a whiff of Unix-ness to it, so I googled “html form fields mac backwards” and found this useful page showing the “Default Mac OS X System Key Bindings”.