/CODE>
 points to the first byte of a master part, you must specify which master part you are dereferencing.</DD>
</DL>
<P>
For example, a visible object dereferencing its <CODE>
VisClass</CODE>
 instance data would call this routine as follows:</P>
<PRE>pself = ObjDeref(oself, 4);</PRE>
<P>
Note, however, the <CODE>
ObjDeref1()</CODE>
 and <CODE>
<A HREF="../../CRef/Routines/R_77.htm#IX_ObjDerefVis()">ObjDerefVis()</A></CODE>
 exist to dereference the Vis master part, and <CODE>
ObjDeref2()</CODE>
 and <CO