Exchange Two Buffers

This routine allows the contents of two buffers to be exchanged. If the either of the buffers is the current output buffer and is in extended memory, then the onboard copy is updated.

Buffer to exchange ?

This input specifies one of the two buffers to be exchanged. Any valid frame buffer may be used.

Exchange with which buffer ?

This input specifies the second of the two buffers to be exchanged. Any valid frame buffer may be used.

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Stuart Dalziel, last page update: 19 February 1996