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 Returns the number of environment entries
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 Syntax

        GT_EnvCount() --> nCount

 Arguments:

      None

 Returns:

      nCount  - The number of environment varibales

 Description:

      Get the number of variables in the program's environment
      Reads the C startup variable to find the number of
      environment variables

 Examples:

      ?  "There are " + str(GT_EnvCount(), 3) + " entries in the "
      ?? "environment table."

 Source: ENVCOUNT.C

 Author:  Andy M Leighton