Answer:

spaces

Answer	Crossword Clue
SPACES	Word separators
SPACES	There are a lot in a lot
SPACES	Lot spots

SPACES	Places at intervals
SPACES	A parking lot has a lot of them
SPACES	Openings
SPACES	Blank areas
SPACES	Gaps
SPACES	Hits the widest key
SPACES	Sets some distance apart
SPACES	Parking lot divisions

SPACES	Parking assignments
SPACES	Garage units
SPACES	Wide open areas?
SPACES	They're left blank
SPACES	..., to a proofreader
SPACES	Parking-lot openings
SPACES	Plenty of nothing
SPACES	Parking-lot spots

SPACES	There are three between each of the words in this clue
SPACES	Parking lot spots
SPACES	Becomes inattentive, with "out"
SPACES	Areas.
SPACES	Wide open ....
SPACES	Gaps.
SPACES	Wide open areas.
SPACES	Intervals.

SPACES	Places at intervals.
SPACES	Unobstructed areas.
SPACES	Spreads out
SPACES	Parking-lot offerings
SPACES	Betweens
SPACES	Some are wide open
SPACES	Interstices
SPACES	Hits a typewriter bar

SPACES	Areas
SPACES	Printers' quads
SPACES	Intervals
SPACES	Exergues, e.g.
SPACES	Wide open ...