This directory contains a new version of the mp macroprocessor. See readme.2nd for details. Using the above along with some C routines is a C runtime library (pieced together from other librarys) which supports the unix standard i/o package plus a true disk cache (this is new). Thus it efficiently supports the array of bytes concept. With this, one can treat a file as a 32 bit address space. So, along with this are some C routines which implement a HEAP structure on disk. This was for a school project on relational database storage structures and also includes a package of doubly linked list routines for the disk heap.