Anyone using and old copy of CHOICECAD

I have a copy of ChoiceCad on an old laptop which I use occasionally. Not used it for a couple of years now.

When I tried to start a drawing today I cannot get the program to accept the co-ordinates.

Menu DRAW
Line Chained

enter first point of line

In Command Box I enter this X20 Y4

Press enter


Box pops up - unable to find function X20

I remember having this problem before and I thought then it was as simple as adding a comma, X20,Y4 but the comma does not help either. Please can anyone who has used Choicecad, tell me correct format to enter co-ordinates into the Command line on top of screen.

From what I remember I just had to put in the X and Y coordinates and press enter each time to build up a drawing, and then press the quit button to end this function.

Thanks