@BMEMCPY — Copies a series of bytes in binary buffers.

Syntax:
%@BMEMCPY[src_bbuf,src_offset,dest_bbuf,dest_offset,size]

src_bbufthe handle of the binary buffer to copy from
src_offsetthe location within the source buffer to copy from
dest_bbufthe handle of the binary buffer to copy to; defaults to src_bbuf
dest_offsetthe location within the destination buffer to copy to
sizethe number of bytes to copy

@BMEMCPY copies a series of bytes. It can copy within a single buffer, or from one buffer to another.

After parsing and validating its arguments, this function just calls memcpy().