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- Retrieves the message corresponding to an error code.
-
- SHOW err [var]
-
- err is the error code for which the message should be displayed
- var is the variable where SHOW stores the message. If 'var' is
- missing, SHOW displays the message on the screen.
-
- If no message can be found, SHOW returns the parameter err itself.
- As additional parameters are ignored, SHOW can also be used to
- select the first word of a sentence.
-