Just FYI
According to the New York City (NYC) Building Code, exit doors from passageways must swing in the direction of exit travel. However, egress doors can swing in either direction for up to 74 occupants for most occupancy types
For Interior room, it's always OPEN IN (push in) this is so in case of emergency, fire fighters can smash inwards.
Alex, I'll take useless knowledge about doors for 1 CIP