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If your command file terminates in error, hit enter before typing the next command in the console window. This clears the console buffer and avoids a potential program crash.
To open and close the console window (used for entering keyboard commands), select View|Console on the menu.
Invalid numerical parameter settings (such as out of range values) may be accepted without reporting an error to the user.
If the BITMAP command creates erroneous files containing grey, blue, and yellow rather than grey-scale shades, try varying screen resolution and/or color depth (number of bits/pixel).
SIGNAL occasionally goes dormant before drawing a graph.
Spaces are required around all arithmetic operators in SIGNAL programs, for example, "a = b * c", not "a = b*c". Omitting these spaces can cause a program crash.