Related Clues:
- Insert, Delete et al
- Alt and Del, e.g
- Janglers on rings
- Crucial things
- E, F and G, but not H
- Tumbler turners
- Enter and Tab
- Shift and Tab, for two
- Tab and Caps Lock, e.g
- Typists hit them
- Piano's 'ivories'
- They open doors
- Typically lost items that are 'found' in the starts of 16-, 24-, 45- and 57-Across
- Things janitors keep on rings
- Much of a typewriter