Attention identifiers and exception conditions

Partitioned terminals have a CLEAR PARTITION key that clears the active partition in the same way that the CLEAR key clears the whole screen . You may need to check for this additional attention identifier in your program logic.

The CLEAR PARTITION AID value is included in DFHAID (see Using the attention identifier).

There are also some new exception conditions associated with partitions, and new ways to get some of the old ones. The new ones include INVPARTN (naming a partition that does not exist in the partition set), INVPARTNSET (naming a module that is not a partition set), and PARTNFAIL (receiving from a partition other than the one the operator transmitted from). They are all described in theBMS macros manual with the commands to which they apply.