https://community.graphisoft.com/t5/Documentation/Linear-Dimensions-in-the-3D-Document-Window/m-p/122697#M19424 You can't do 2D annotations directly in the live 3D window. You need to make a 3D document, which, while still live 3D, is a fixed viewpoint which allows the 2D to make sense.<BR /> <BR /> The only way to annotate in 3D is with library parts that have a 3D component for the purpose. Thu, 28 Oct 2010 19:19:10 GMT Anonymous 2010-10-28T19:19:10Z https://community.graphisoft.com/t5/Documentation/Linear-Dimensions-in-the-3D-Document-Window/m-p/122696#M19423 <DIV class="actalk-migrated-content"><T>Using Archicad v12 I'm not able to use the dimension tool in the 3D window because it is grey-ed out.<BR /> The manual says I should be able to however.<BR /> Could anyone assist please ?<BR /> Rgds<BR /> RW</T></DIV> Mon, 22 May 2023 22:00:31 GMT https://community.graphisoft.com/t5/Documentation/Linear-Dimensions-in-the-3D-Document-Window/m-p/122696#M19423 Anonymous 2023-05-22T22:00:31Z https://community.graphisoft.com/t5/Documentation/Linear-Dimensions-in-the-3D-Document-Window/m-p/122697#M19424 You can't do 2D annotations directly in the live 3D window. You need to make a 3D document, which, while still live 3D, is a fixed viewpoint which allows the 2D to make sense.<BR /> <BR /> The only way to annotate in 3D is with library parts that have a 3D component for the purpose. Thu, 28 Oct 2010 19:19:10 GMT https://community.graphisoft.com/t5/Documentation/Linear-Dimensions-in-the-3D-Document-Window/m-p/122697#M19424 Anonymous 2010-10-28T19:19:10Z https://community.graphisoft.com/t5/Documentation/Linear-Dimensions-in-the-3D-Document-Window/m-p/122698#M19425 Thanks Matthew.<BR /> I was confused by the 3D Document definition; didn't realize it wasn't the 3D window<BR /> Rgds<BR /> RW Thu, 28 Oct 2010 21:01:59 GMT https://community.graphisoft.com/t5/Documentation/Linear-Dimensions-in-the-3D-Document-Window/m-p/122698#M19425 Anonymous 2010-10-28T21:01:59Z