# INQUIRE: ACTION Specifier

The ACTION specifier asks which I/O operations are allowed for a file. It takes the following form:

ACTION = act

act | Is a scalar default character variable that is assigned one of the following values:
'READ' | If the file is connected for input only
'WRITE' | If the file is connected for output only
'READWRITE' | If the file is connected for both input and output
'UNDEFINED' | If the file is not connected

Parent topic: INQUIRE Statement Specifiers