AUTO (Auto) keyword for display files

Under some circumstances, the AUTO keyword is equivalent to the CHECK keyword.

The AUTO keyword is equivalent to the CHECK keyword as follows:
AUTO(RA)
CHECK(ER)
AUTO(RAB)
CHECK(RB)
AUTO(RAZ)
CHECK(RZ)
The format of the keyword is:
AUTO(RA [RAB | RAZ])  AUTO(RAB | RAZ)

The CHECK keyword is preferred.

Related reference
CHECK (Check) keyword for display files