This sentence is in this page by Sterne, awfully edgy (7,5)

I believe the answer is:

present tense

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'this sentence is' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Maybe there's a link between them I don't understand?

'this page by sterne awfully edgy' is the wordplay.
'this page' becomes 'p'.
'by' says to put letters next to each other.
'awfully' indicates an anagram.
'edgy' becomes 'tense' (similar in meaning).
'sterne' with letters rearranged gives 'resent'.
'p'+'resent'+'tense'='PRESENT TENSE'

'in' acts as a link.

Can you help me to learn more?

I've seen this clue in The Telegraph.

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