Types of the editing objects.
| IG_PDE_CONTENT | 0 | Content. |
| IG_PDE_TEXT | 1 | Text. |
| IG_PDE_PATH | 2 | Path. |
| IG_PDE_IMAGE | 3 | Image. |
| IG_PDE_FORM | 4 | Form. |
| IG_PDE_POSTSCRIPT | 5 | PostScript. |
| IG_PDE_XOBJECT | 6 | XObject. |
| IG_PDE_CLIP | 7 | Clip. |
| IG_PDE_FONT | 8 | Font. |
| IG_PDE_COLORSPACE | 9 | ColorSpace. |
| IG_PDE_GSTATE | 10 | Graphic State. |
| IG_PDE_PLACE | 11 | Place. |
| IG_PDE_CONTAINER | 12 | Container. |
| IG_PDF_SYSFONT | 13 | System Font. |
| IG_PDE_PATTERN | 14 | Pattern. |
| IG_PDE_DEVICENCOLORS | 15 | Device N Colors. |
| IG_PDE_SHADING | 16 | Shading. |
| IG_PDE_GROUP | 17 | Group. |
| IG_PDE_UNKNOWN | 18 | Unknown. |
| IG_PDE_BEGIN_CONTAINER | 19 | Begin Container. |
| IG_PDE_END_CONTAINER | 20 | End Container. |
| IG_PDE_BEGIN_GROUP | 21 | Begin Group. |
| IG_PDE_END_GROUP | 22 | End Group. |
| IG_PDE_XGROUP | 23 | XGroup. |
| IG_PDE_SOFTMASK | 24 | SoftMask. |
| IG_PDF_SYSENCODING | 25 | System Encoding. |
| IG_PDE_DOC | 26 | Document. |
| IG_PDE_PAGE | 27 | Page. |
| IG_PDE_READER | 28 | Reader. |
| IG_PDE_WRITER | 29 | Writer. |
| IG_PDE_TEXTITEM | 30 | Text Item. |
| IG_PDE_LASTTYPE | 31 | Last Type. |