A way to allocate memory for structures needed by many API calls. CLSHEAP.PRG is a procedure library that implements a non-visual class that manages a memory heap. It can create and release static memory blocks, and provides mechanisms to transfer information between heap allocations and VFP memory variables. A set of procedures are provided to do conversion between internal VFP data representations and the external representations that are needed when building a structure, as well as to transfer data between absolute memory addresses and VFP variables.