The sort to press keys? (4)
I believe the answer is:
type
'the sort' is the definition.
(type is a kind of sort)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for type that I've seen before include "Kind - press keys" , "Kind or class as of people" , "key" , "of a certain kind" , "Category; use keyboard" .)