A scheduling protocol that establishes when a Task should happen. Constraints (which can be flexible or inflexible) are:

ASAP - As soon as possible (no real constraint).

ALAP - As late as possible.

FNET - Finish no earlier than.

SNET - Start no earlier than.

FNLT - Finish no later than.

SNLT - Start no later than.

MFO - Must finish on.

MSO - Must start on.

See also: Deadline.

SOURCE; microsoft project