Answer:

ISEEIT

Answer	Crossword Clue
ISEEIT	"You can stop pointing"
ISEEIT	Discoverer's claim
ISEEIT	"Eureka"

ISEEIT	Discoverer's call
ISEEIT	Spotter's confirmation
ISEEIT	Response to a pointer
ISEEIT	Response to "Look!"
ISEEIT	"Thar she blows!"
ISEEIT	Op art viewer's cry, maybe
ISEEIT	Response to someone pointing
ISEEIT	"Gotcha!"

ISEEIT	Reply to "Look at that!"
ISEEIT	"Eureka!"
ISEEIT	Words upon making out a distant image
ISEEIT	"Looky there!"
ISEEIT	"There!"
ISEEIT	Searcher's cry
ISEEIT	Response to "Look over there!"
ISEEIT	Reply to 'Look at that!'

ISEEIT	Bird-watcher's cry
ISEEIT	Response to pointing out a resemblance between two people