buffer into which the id will be stored. Should at least be 5 bytes.
RESULT
buf - pointer to the supplied buffer.
NOTES
Assumes that the supplied ID is stored in local byte order.
EXAMPLE
// Print the ID of the current contextnode
UBYTE buf[5];
struct ContextNode *cn;
if (cn = CurrentChunk(iff)
printf
(
"ID of current chunk: %s\n",
IDtoStr(cn->cn_ID)
);