Shows graphics objects with projections from the x, y and/or z directions.
Set Shadow options:
X Shadow: <%Mathlet MSPSetDefault[$$xshadow, "True"] %>   > False    > True       X Shadow Position: <%Mathlet MSPSetDefault[$$xshadowpos, "-1"] %>   > Left    > Right   
Y Shadow: <%Mathlet MSPSetDefault[$$yshadow, "True"] %> > False > True    Y Shadow Position: <%Mathlet MSPSetDefault[$$yshadowpos, "1"] %>   > Front > Behind
Z Shadow: <%Mathlet MSPSetDefault[$$zshadow, "True"] %>   > False    > True       Z Shadow Position: <%Mathlet MSPSetDefault[$$zshadowpos, "-1"] %>   > Above    > Beneath