🚀 go-pugleaf

I need some information regarding software application development on DOS
system.  I am going to get involved in a development project where the
resultant software must do the following:  provide an intuitive menu/screen
structure;  must be capable of handling large files (250,000+ records);
must be capable of generating graphs for screen display and print;  must
be able to import ascii files;  and more.

Questions:  Is there a 4GL, development tool, whatever, that facilitates
the programming of screens, file manipulation, printer handling, and 
graphics generation?  Is there a group of packages that will accomplish
said task?  Has anyone had any experience with Clipper or Paradox or
similar packages?  Are there C libraries/tools available that accomplish
these things?

Thanks in advance.  Please e-mail responses.  I will post a summary.
Lee Bertagnolli
pallas!lbert359
lbert359@athenanet.com