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Manipulating the data stack

Internally LEXT holds images and lists in its own in a stack system. There is a separate stack for lists and images. Each stack position is referred to as a slot. The dimensions of the slots and stacks are defined in a startup file (ie. the maximum size of both images and lists and the number of image and list slots). If this is not present in the default directory then the required values are prompted for.

The following commands allow stack examination and manipulation:

Wed Mar 16 00:17:46 GMT 1994