The following are constants for the available Annotation Toolbar Buttons.
| Value | Meaning | 
|---|---|
| ANNTOOL_SELECT | [0] Selection Pointer Tool | 
| ANNTOOL_LINE | [1] Line Tool | 
| ANNTOOL_RECT | [2] Rectangle Tool | 
| ANNTOOL_ELLIPSE | [3] Ellipse Tool | 
| ANNTOOL_POLYLINE | [4] Polyline Tool | 
| ANNTOOL_POLYGON | [5] Polygon Tool | 
| ANNTOOL_POINTER | [6] Pointer Tool | 
| ANNTOOL_FREEHAND | [7] Freehand Line Tool | 
| ANNTOOL_HILITE | [8] Highlight Tool | 
| ANNTOOL_REDACT | [9] Redaction Tool | 
| ANNTOOL_TEXT | [10] Text Tool | 
| ANNTOOL_NOTE | [11] Note Tool | 
| ANNTOOL_STAMP | [12] Stamp Tool | 
| ANNTOOL_BUTTON | [13] Button Tool | 
| ANNTOOL_HOTSPOT | [14] HotSpot Tool | 
| ANNTOOL_AUDIO | [15] Audio Clip Tool | 
| ANNTOOL_RULER | [16] Ruler Tool | 
| ANNTOOL_CROSSPRODUCT | [17] Cross product Tool | 
| ANNTOOL_POINT | [18] Point Tool | 
| ANNTOOL_PROTRACTOR | [19] Protractor Tool | 
| ANNTOOL_VIDEO | [20] Video Tool | 
| ANNTOOL_PUSHPIN | [21] PushPin Tool | 
| ANNTOOL_FREEHANDHOTSPOT | [22] Freehand HotSpot Tool | 
| ANNTOOL_CURVE | [23] Curve Tool | 
| ANNTOOL_CURVECLOSED | [24] Closed Curve Tool | 
| ANNTOOL_ENCRYPT | [25] Encrypt Tool | 
| ANNTOOL_TEXTPOINTER | [26] Text Pointer Tool | 
| ANNTOOL_POLYRULER | [27] Polyruler Tool | 
| ANNTOOL_RTF | [28] Rich Text Tool | 
| ANNTOOL_STAMP_FIRST | [29] First Stamp /* define that marks the first rubber stamp */ | 
| ANNTOOL_STAMP_APPROVED | [29] Approved Stamp | 
| ANNTOOL_STAMP_ASSIGNED | [30] Assigned Stamp | 
| ANNTOOL_STAMP_CHECKED | [31] Checked Stamp | 
| ANNTOOL_STAMP_CLATPRV | [32] Client Attorney Privilege | 
| ANNTOOL_STAMP_COPY | [33] Copy Stamp | 
| ANNTOOL_STAMP_DRAFT | [34] Draft Stamp | 
| ANNTOOL_STAMP_EXTENDED | [35] Extended Stamp | 
| ANNTOOL_STAMP_FAX | [36] Fax Stamp | 
| ANNTOOL_STAMP_FAXED | [37] Faxed Stamp | 
| ANNTOOL_STAMP_IMPORTANT | [38] Important Stamp | 
| ANNTOOL_STAMP_INVOICE | [39] Invoice Stamp | 
| ANNTOOL_STAMP_NOTICE | [40] Notice Stamp | 
| ANNTOOL_STAMP_OFFICIAL | [41] Official Stamp | 
| ANNTOOL_STAMP_ONFILE | [42] On File Stamp | 
| ANNTOOL_STAMP_PAID | [43] Paid Stamp | 
| ANNTOOL_STAMP_PASSED | [44] Passed Stamp | 
| ANNTOOL_STAMP_PENDING | [45] Pending Stamp | 
| ANNTOOL_STAMP_PROCESSED | [46] Processed Stamp | 
| ANNTOOL_STAMP_RECEIVED | [47] Received Stamp | 
| ANNTOOL_STAMP_REJECTED | [48] Rejected Stamp | 
| ANNTOOL_STAMP_RELEASE | [49] Release Stamp | 
| ANNTOOL_STAMP_SENT | [50] Sent Stamp | 
| ANNTOOL_STAMP_SHIPPED | [51] Shipped Stamp | 
| ANNTOOL_STAMP_TOPSECRET | [52] Top Secret Stamp | 
| ANNTOOL_STAMP_URGENT | [53] Urgent Stamp | 
| ANNTOOL_STAMP_VOID | [54] Void Stamp | 
| ANNTOOL_USER | [0x0100] First user defined tool | 
| ANNTOOL_USERLAST | [0x0200] Last allowed user defined tools | 
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