REDUCE

13 Commands for Interactive Use

REDUCE is designed as an interactive system, but naturally it can also operate in a batch processing or background mode by taking its input command by command from the relevant input stream. There is a basic difference, however, between interactive and batch use of the system. In the former case, whenever the system discovers an ambiguity at some point in a calculation, such as a forgotten type assignment for instance, it asks you for the correct interpretation. In batch operation, it is not practical to terminate the calculation at such points and require resubmission of the job, so the system makes the most obvious guess of your intentions and continues the calculation.

 13.1 Error Handling: errcont, retry
 13.2 Referencing Previous Results: input, ws, display
 13.3 Interactive Editing: ed, editdef
 13.4 Interactive File Control: int, pause, cont

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