BLIERRNUM()                   Get Blinker error number
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 Function : Get Blinker error number

 Syntax   : nuValue = BLIERRNUM()

 Return   : Blinker Error Number

 This function returns the Blinker runtime error number, and is for use in
 the Blinker error handler BLERRPRG. In normal operation the value returned
 is zero, meaning no error.

 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 number
    *
    ? "The BLINKER error number is", BLIERRNUM()