Other than naming conflicts, there is no reason that SuperLib should conflict with other libraries. a) SuperLib uses no direct screen writing - it is all done through Clipper. b) SuperLib does not take over any interrupts. c) SuperLib uses no Clipper internals. d) SuperLib does not replace the Clipper GET system. If, however, another library you are using does any of these things, there may be unpredictable results.