Lines representing reality outside without using metaphor (9)
I believe the answer is:
literally
'without using metaphor' is the definition.
I can't tell whether this definition defines the answer.
'lines representing reality outside' is the wordplay.
'lines' becomes 'll' (an abbreviation for line written twice).
'representing' is an anagram indicator (letters must be re-presented in a new way).
'outside' is an insertion indicator (some letters go outside others).
'reality' with letters rearranged gives 'literay'.
'll' going within 'literay' is 'LITERALLY'.
Can you help me to learn more?
(Other definitions for literally that I've seen before include "Actually, really" , "Verbatim" , "Absolutely" , "Without exaggeration" , "According to the precise meaning of words" .)