os2c/minipim.c -- the main source file that links all the components together
os2c/minipim.h -- definitions for the main program
os2c/minipim.rc -- resource definitions (mainly menus)
os2c/pimcalc.c -- the calculator component
os2c/pimcalc.h -- definitions for the calculator
os2c/pimcomn.h -- some common definitions for the program
os2c/pimedit.c -- the notepad component
os2c/pimedit.h -- definitions for the notepad
os2c/pimphone.c -- the phone list component
os2c/pimphone.h -- definitions for the phone list
os2c/pimtodo.c -- the to-do list component
os2c/pimtodo.h -- definitions for the to-do list
All of the above source code, the compiled objects, makefile and executable are in this directory.