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(Can be used in FASTREXX condition expressions.)

Saves a copy of the current output buffer.

There are no synchronization restrictions. The SAVE_OUT() invocation that a RSTR_OUT() invocation is "reversing" could have occurred for the current record, or any previously processed record.

There is no stacking of saved output buffers. If SAVE_OUT() is invoked twice in succession, then the data saved by the first invocation is lost.