Type big letters right in PT outside (5)
I believe the answer is:
'type big letters' is the definition.
'print' can be an answer for 'type' (both can mean printed text). I am unsure of the 'big letters' bit.
'right in pt outside' is the wordplay.
'right' becomes 'r' (abbreviation).
'outside' indicates putting letters inside (some letters go outside others).
'r'+'in'='rin'
'rin' put within 'pt' is 'PRINT'.
Can you help me to learn more?
(Other definitions for print that I've seen before include "Non-joined-up writing" , "Produce (books, etc)" , "Publish; patterned fabric" , "Produce a paper copy" , "impression" .)