Getting things into order



             This program is a useful one if

          you have to sort a list into order, or

          to produce an index for a book. There

           are two versions - one for the ZX81

             and one for the ZX Spectrum. The

               programs are by Tim Hartnell.



The programs explain themselves as they run. The first,

longer listing is for the ZX81. If contains an error-

checking routine, so that you can amend entries before

making them a final part of the list to be sorted and

printed.

   The Spectrum version does not contain such a routine,

but one could easily be added if you so desire, by copying

the routine from line 620 in the ZX81 program.

   [The TZX holds both versions, the Spectrum one as

printed and the ZX81, with the SCROLLs converted to PRINT

where applicable. Inserting the error-check routine from

the latter into the former is left as an exercise for the

reader.]