In addition to RtlMoveMemory(), the following functions can be used to perform memory copy operations. This means that you can have several simultaneously-declared memory copy routines without having to constantly redefine the declaration of RtlMoveMemory()

DECLARE INTEGER memmove IN MSVCRT ;
   INTEGER @ lpvDest, ;
   INTEGER @ lpvSource, ;
   INTEGER dwLength

DECLARE INTEGER memcpy IN MSVCRT ;
   INTEGER @ lpvDest, ;
   INTEGER @ lpvSource, ;
   INTEGER dwLength

DECLARE INTEGER _memccpy IN MSVCRT ;
   INTEGER @ lpvDest, ;
   INTEGER @ lpvSource, ;
   SHORT c, ;
   INTEGER dwLength

&& _memccpy copies either to the Length dwLength, or until an ASCII value c
&& is encountered;  it's a useful replacement for lstrcpyn(), or for copying up
&& to a delimiter character. c must be in the range 0-255

DECLARE INTEGER strcpy IN MSVCRT ;
   STRING @ lpcDest, ;
   STRING @ lpcSource

&& Copies a null terminated string to a buffer

The first three you can play around with the data typing of lpvDest and lpvSource to perform conversions, or to copy to a static buffer - ie if you're copying from a static block of memory where a pointer is stored in a VFP numeric, and you want to copy a block of 250 characters into a VFP String:

DECLARE INTEGER memcpy IN MSVCRT STRING @, INTEGER, INTEGER
cMyBuffer = REPL(CHR(0),250)
=memcpy(@cMyBuffer, nMyStaticBlockPointer, 250)

_memccpy is extremely useful in parsing; it returns the pointer to the last address copied, so that you can continue parsing a buffer from the point where a delimiter is encountered.

I'll probably incorporate some of this into CLSHeap in the next week or so.