NGshort()
 Read the information for a SHORT list
------------------------------------------------------------------------------

 Function:      NGshort()

 Syntax:        NGshort(nEntry) --> aShortList

 Description:   This function loads a Short List into the result array.
                The returned array is 2-dimensional, formatted as Followed:

                { { cShortEntryText , nShortEntryAdress } .... }

                The 1st dimension are all the entries, the 2nd dimension
                holds the Short Entry Text and the Short Entry Adres, where
                the underlying entry can be found, or -1 which indicates no
                underlying entry. An underlying Entry can be a Long (plain
                text), or another Short List.

 Returns:       See Above. NGshort() returns a 2-Dimensional string
                with the Short List information. When the Entry is not a
                Short-List, then the function returns NIL, so your Application
                ought to check for that return value too.

 Example:       See Demo programs.