Today I learned

Conjunctions of predicates demand no commas.

The small PRT tracks are only three feet across,
and compliment modern office architecture.

Psst, the word you want is 'complement' with an 'e'.
If you 'compliment' (with an 'i') something, you praise it.
If you 'complement' (with an 'e') something, then you complete it.
(In the realm of aesthetics, things that complement each other
mutually enhance each other.)
Mnemonic: 'complement' = 'complete'.

The comma is incorrect as well.
This is a conjunction of predicates, not of clauses,
and therefore demands no comma.

[Raymond is currently away; this message was pre-recorded.]

"

(Via The Old New Thing.)