## Printer Device Driver

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### R3_FileCheckDialogs

Performs one of the following three actions. The actions depend on various parameters.

If the file to which the PostScript output is destined already exists, a dialog box is displayed that asks if the user wishes to overwrite the displayed file.

If the file name is valid and does not exist, control is returned to the OpenChannel function where output to the file will continue normally.

If the user specifies an invalid file for output, a dialog box asking the user to enter another file name is displayed.