David James wrote:

Thank you, that seems to do everything I need at present. I can see I need to read gpc.pas more carefully to see what other nice features are in there.

:-) And we should document them better... Frank -- Frank Heckenbach, frank@g-n-u.de, http://fjf.gnu.de/ GPC To-Do list, latest features, fixed bugs: http://agnes.dida.physik.uni-essen.de/~gnu-pascal/todo.html