[fpc-pascal]A good array sorting unit?

[Michael Lang]

Under DOS, I used the wonderful TpSort unit of Turbo Professional to
sort stuff. Does anybody here know of a unit, which works under Free
Pascal and has similar features. I need to sort arrays and I'd like to
be able to give the sorting algorithm the address of a function,
which I can write on my own, and which is then used by the sorting
function to do the trick. This works great with TpSort. For instance
with TpSort, I can write a function which sorts using several fields
of the array (first by name, then by date) etc.

Thanks

          <***  Michael Lang  ***>