TSO/E provides syntax checkers for several data set types that it provides. For these data set types, the associated syntax checker determines the attributes of the data set type by referring to information that EDIT initialization sets in the option word. The option word is a fullword in the parameter list of the syntax checker. For more information about the parameter list and option word, see Record format and interface for syntax checking.

You can write your own syntax checkers. However, for installation- written syntax checkers, EDIT initialization does not place attribute information about the data set type in the option word. You can, however, write an exit for your syntax checker that fills in the option word for your syntax checker with information the user specifies on the EDIT command.