Rep has yet to go off and write it again (6)
I believe the answer is:
retype
'write it again' is the definition.
I can't judge whether this defines the answer.
'rep has yet to go off' is the wordplay.
'has' says to put letters next to each other.
'to go off' indicates an anagram.
'rep' after 'yet' is 'yetrep'.
'yetrep' is an anagram of 'RETYPE'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for retype that I've seen before include "Produce amended" , "Tap out again on keyboard" , "Repeat work in pool" , "Set (the same text) again on a word processor" , "Put into printed characters again" .)