undefined error

A name used as a dictionary key in some context cannot be found. This occurs if a name is looked up explicitly in a specified dictionary (get) or in the current dictionary stack (load) and is not found. It also occurs if an executable name is encountered by the interpreter and is not found in any dictionary on the dictionary stack.

A few PostScript operators are disabled in certain contexts-for example, it is illegal to execute image, or operators that specify colors or set color-related parameters in the graphics state, after a setcachedevice or setcachedevice2 in a BuildChar or BuildGlyph procedure. Attempting to execute such disabled operators results in an undefined error.

Caused by :
SEE ALSO: known, where, load, exec, get

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