Here are the possible solutions for indicates that one is in clue
Answer
Clue
Relevancy
antesup
Clue
Indicates that one is in
Indicates one is looking for a hand
bakspaecharater
Clue
Symbol in computing that indicates moving one unit to the left
flag
Clue
A checkered one indicates victory
Definition
to mark with a cloth used as a symbol
genepool
Clue
A large one indicates diversity
huh
Clue
Answer that probably won't earn you any points on a game show unless the prompt is "This one-syllable sound usually indicates someone doesn't know what you're talking about"