To generate PortaCalc for VMS using these files: IF you lack DTR, THEN LIBR/REPL PCCX DTRIF LIBR/EXTRACT=*/OUT=PCCX.OBJ PCCX.OLB If you DON'T have DTR THEN LINK/NOMAP PCCX If you DO have DTR THEN LINK/NOMAP PCCX+DTR/OPT PCCX is the "smart" PortaCalc using disk based but small files to hold numbers and formulae on PDP11. This object library builds a version using VMS memory instead but which is less of a memory eater than PCCVM. The standard version must be built with the DTR.OPT file and links with DTR-32. The command is: LINK PCCX+DTR/OPT for that. To build a version NOT linked to DTR32, replace the DTRIF modules in PCCX.OLB first using the supplied (dummy) DTRIF object module. The command is LIBR/REPL PCCX DTRIF and THEN you extract the objects and build PCCX. PCGRAF is the library that generates the PortaCalc graphics package. NOTE:: Do NOT attempt to just extract the main program and link to the library. At least the block data module needs to be explicitly accessed also. This method is a shortcut and ensures all the pieces are there in the .EXE file. The program will do weird things if you don't have the block data, even though it will appear to link OK. Enjoy. Also, the author appreciates hearing about users of this program. If you like it, send a letter saying so. Maybe you'll find out about enhancements that way, too. Glenn Everhart 409 High St. Mt. Holly NJ 08060 work phn 6093386022 (major emergencies only please!)