ProCMD encompasses several Apple II utility programs which are designed as modules appended to the ProDOS BASIC interpreter.  You can add some or all of the modules to memory.  This enables new ProDOS commands which can be typed from the keyboard or invoked from a program.  Create your own modules and only load what you need:  Applesoft Editor, Keyboard Macros, Variable Trace, XREF, Renumber, Fast Sort, Print Using, Fancy Lister, Double Hi-Res Graphic Extensions, Single to Double Hi-Res Convert, Color & Pattern Fill, Mouse Support, Hi-Res Proportional Fonts, Copy Files, Filedump, and Find.