s3d_link - link object to another one
#include <s3d.h>
int s3d_link(int oid_from, int oid_to);
A linked object will move along with it´s link parent. For example if
you have a book on a table, you can link the book to the table so the
book will "keep on the table" if you move the table around in space. It
will also rotate with the table etc.
Simon Wunderlich
Author of s3d