📄 common_group_codes_for_graphical_objects_al_u05_c.htm
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<font face=Arial color=#003399 size=3><b> <a href="dxf_group_codes.htm">DXF Group Codes</a>
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<font face=Arial color=#003399 size=3><b><a href="entities_section_al_u05_c.htm"><img src=images/book2.gif border=0> ENTITIES Section</a>
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<font face=Arial color=#003399 size=3><b><img src=images/bk_space.gif border=0> <img src=images/book2.gif border=0> Common Group Codes for Graphical Objects
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<p><font face="MS Sans Serif,Arial" size=2>The following table shows group codes that apply to virtually all graphical objects. Some of the group codes shown here are included with an entity definition only if the entity has nondefault values for the property. When you refer to the group codes by entity type, which lists the codes associated with specific entities, keep in mind that the codes shown here are also present.
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<p><font face="MS Sans Serif,Arial" size=2>When a group is omitted, its default value upon input (when using DXFIN) is indicated in the third column. If the value of a group code is equal to the default, it is omitted upon output (when using DXFOUT).
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<font face=Arial size=2><i>Group codes that apply to all graphical objects
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<TABLE border=0 cellpadding=2 cellspacing=4><TR VALIGN=TOP><TD bgcolor=#F9F6ED><font face="MS Sans Serif,Arial" size=2><b><br>Group code</b></font></td>
<TD bgcolor=#F9F6ED><font face="MS Sans Serif,Arial" size=2><b><br>Description</b></font></td>
<TD bgcolor=#F9F6ED><font face="MS Sans Serif,Arial" size=2><b>If omitted,<br>defaults to...</b></font></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>-1</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>APP: entity name (changes each time <br>a drawing is opened)</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2><font face=Arial><i>Not</i></font> omitted</font></p><font face=Arial><i><br></i></font></TD></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>0</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Entity type</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2><font face=Arial><i>Not</i></font> omitted</font></p><font face=Arial><i><br></i></font></TD></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>5</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Handle </font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2><font face=Arial><i>Not</i></font> omitted</font></p><font face=Arial><i><br></i></font></TD></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>102</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Start of application defined group "{<font face=Arial><i>application_name</i></font>". For example, "{ACAD_REACTORS" indicates the start <br>of the AutoCAD persistent reactors group </font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>no default</font></p></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2><font face=Arial><i>application-defined codes</i></font> </font></p><font face=Arial><i><br></i></font></TD>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Codes and values within the 102 groups are application-defined.</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>no default</font></p></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>102</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>End of group, "}"</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>no default</font></p></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>100</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Subclass marker (AcDbEntity)</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2><font face=Arial><i>Not</i></font> omitted</font></p><font face=Arial><i><br></i></font></TD></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>67</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Absent or zero indicates entity is in model space. One indicates entity is in paper space. (optional)</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>0</font></p></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>8</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Layer name</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2><font face=Arial><i>Not</i></font> omitted</font></p><font face=Arial><i><br></i></font></TD></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>6</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Linetype name (present if not BYLAYER). <br>The special name BYBLOCK indicates a <br>floating linetype. (optional)</font></p></td>
<TD bgcolor=#F9F6ED><P><FONT FACE="MS SANS SERIF,ARIAL" SIZE=2>BYLAYER</FONT></P></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>62</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Color number (present if not BYLAYER). Zero indicates the BYBLOCK (floating) color. 256 indicates BYLAYER. A negative value indicates that the layer is turned off. (optional)</font></p></td>
<TD bgcolor=#F9F6ED><P><FONT FACE="MS SANS SERIF,ARIAL" SIZE=2>BYLAYER</FONT></P></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>48</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Linetype scale (optional)</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>1.0 </font></p></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>60</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Object visibility (optional): <br>0 = visible, 1 = invisible. </font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>0 </font></p></td></TR>
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<p><font face="MS Sans Serif,Arial" size=2>The following table shows the group codes that are output if persistent reactors have been attached to an entity.
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<font face=Arial size=2><i>ACAD_REACTORS records
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<TABLE border=0 cellpadding=2 cellspacing=4><TR VALIGN=TOP><TD bgcolor=#F9F6ED><font face="MS Sans Serif,Arial" size=2><b>Group code</b></font></td>
<TD bgcolor=#F9F6ED><font face="MS Sans Serif,Arial" size=2><b>Description</b></font></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>102</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>"{ACAD_REACTORS" indicates the start of the AutoCAD persistent reactors group </font></p></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>330</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Soft pointer ID/handle to owner dictionary</font></p></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>102</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>End of group, "}"</font></p></td></TR>
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<p><font face="MS Sans Serif,Arial" size=2>The following table shows the group codes that are output if an extension dictionary has been attached to an entity.
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<font face=Arial size=2><i>ACAD_XDICTIONARY records
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<TABLE border=0 cellpadding=2 cellspacing=4><TR VALIGN=TOP><TD bgcolor=#F9F6ED><font face="MS Sans Serif,Arial" size=2><b>Group code</b></font></td>
<TD bgcolor=#F9F6ED><font face="MS Sans Serif,Arial" size=2><b>Description</b></font></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>102</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>"{ACAD_XDICTIONARY" indicates the start of an extension dictionary group </font></p></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>360</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>Hard owner ID/handle to owner dictionary</font></p></td></TR>
<TR VALIGN=TOP><TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>102</font></p></td>
<TD bgcolor=#F9F6ED><p><font face="MS Sans Serif,Arial" size=2>End of group, "}"</font></p></td></TR>
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<p><font face="MS Sans Serif,Arial" size=2><font color=gray><b>Note </b></font>Do <font face=Arial><i>not</i></font> write programs that rely on the order shown in these DXF code tables. Although these tables show the order of group codes as they usually appear, the order can change under certain conditions or in a future AutoCAD release. The code that controls an entity should be driven by a case (switch) or a table so that it can process each group correctly even if the order is unexpected.
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