BLIERRPRM() / BLIERRPRMBAS()  Get Blinker error parameter
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 Function : Get Blinker error parameter

 Syntax   : cValue = BLIERRPRM()

 Return   : String containing name of file related to the Blinker error

 Some of the Blinker runtime errors refer to a particular file name, and this
 function returns this file name for use in the error message.

 For details of modifying the Blinker error handler see Chapter 7, Special
 Features

 For details of the Blinker runtime errors see chapter 11 Errors and Error
 Messages.

 Example:

    * Get the Blinker error parameter
    *
    ? "The file causing the BLINKER error is", BLIERRPRM()