Program — one that may be called Alpha, perhaps (8)
I believe the answer is:
codename
'may be called alpha perhaps' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'program one' is the wordplay.
'program' becomes 'code' (to program is to write computer code).
'one' becomes 'name' (I can't justify this - if you can you should believe this answer much more).
'code'+'name'='CODENAME'
'that' acts as a link.
Can you help me to learn more?
(Other definitions for codename that I've seen before include "Secret appellation" , "Handle" , "Pseudonym, say" .)