Altkey

7 clues
It's often under Z
Space bar's neighbor
Start of some shortcuts
How some shortcuts start
Space bar neighbor, at times
Either of two space bar neighbors
PC feature only used in combinations
Similar answers:
Aalto
Aaltosaxes
Abbydalton
Abdominalthrust
Abuyablealternative
Acidsalt
Actormickey
Actuarialtables
Addapinchofsalt
Addedsalt
Additionaltaxes
Addsalt
Addssalt
Admiralties
Admiralty
Admiraltyarch
Aggravatedasalt
Agrainofsalt
Ahalt
Airhockey