READ: Input from different card files

The READ card allows input cards to be read from different card files.

Format

READ `card-file-name'

The default file format is CARDS.

Card files may contain any number of READ cards. Files specified on a READ card may contain other READ cards. Recursive READ cards (file Z contains a READ `Y' card, and file Y a READ `Z' card) are not allowed.

Note that each card file specified with a READ card must end with an ENDQ card.