Get a NULL terminated string from memory.
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 Syntax

        GT_PeekStZ(<nSegment>,<nOffset>) --> cString

 Arguments:

      <nSegment> is the segment of the string in memory.

      <nOffset>  is the offset of the string in memory.

 Returns:

      The NULL terminated string found at <nSegment>:<nOffset>.

 Description:

      GT_PeekStZ() can be used for getting NULL terminated strings from
      specific areas of memory.

 Examples:

      // Print the first entry in the program's environment table.

      ? GT_PeekStZ(GT_PeekW(GT_PSPSeg(),44),0)

 Source: PEEKSTRZ.C

 Author:  David Pearson