PPWIZARD is a free preprocessor for HTML, REXX, Visual Basic or any text files.
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QueryExists()

This is a rexx function provided by PPWIZARD. This routine (like all PPWIZARD extensions) can be used with any operating system supported by PPWIZARD.

This function will determine whether a file exists. If it does not exist then "" is returned (else it's full filename (path etc) is returned).

The function takes 2 parameters:

  1. The name of a file (absolute or relative).

  2. This optional parameter if set to 'Y' causes PPWIZARD to abort if the file does not exist.

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PPWIZARD Manual
My whole website and this manual itself was developed using PPWIZARD (free preprocessor written by Dennis Bareis)
Thursday January 17 2002 at 6:27pm