It's bound to be cartographical (5)
I believe the answer is:
atlas
'be cartographical' is the definition.
I can't tell whether this defines the answer.
'it's bound to' is the wordplay.
'it' becomes ''t' (abbreviation. e.g. in 'tis).
'bound' is an insertion indicator.
'to' becomes 'alas' (I can't justify this - if you can you should believe this answer much more).
't' inserted within 'alas' is 'ATLAS'.
Can you help me to learn more?
(Other definitions for atlas that I've seen before include "Titan with a fearsome burden" , "Size of paper once" , "Giant" , "Legendary weightlifter" , "Ballistic missile" .)