The following chunks define the objects available in the DR2D FORM.

 vbm  (0x56424d20)       /* virtual bitmap */ 
 cply (0x43504c59)       /* closed polygon */ 
 oply (0x4f504c59)       /* open polygon */ 
 grup (0x47525550)       /* group */ 
 stxt (0x53545854)       /* simple text */ 
 tpth (0x54505448)       /* a text string along a path */