> For the complete documentation index, see [llms.txt](https://help.auxalia.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.auxalia.com/plant-tools/plantexpresstools/how-to-use/renumber/usage/general-usage.md).

# General Usage

The chapter describes how to use the Renumbering function in general.

If the drawing you are in is neither a P\&ID nor a 3D piping drawing you get a message and no user interface opens.

![](/files/RpLwy4WoW7gyphNYWWqO)

If you are in a P\&ID/3D Piping drawing the user face will open. It will show either the default values as in the image below, or the last used settings which will be stored in *\ACPlantTools\PlantExpressTools\Renumber\ObjectRenumber.xml* when the project gets closed.

The various options will be explained in the next chapters.

Remark: Make sure you save the drawing before renumbering. Property Values which haven't been stored yet will not be renumbered.

![](/files/CiLsSOUl4UTo9DOemHz0)

You click **Select** and the dialog closes and are asked to select an object for renumbering.

![](/files/2KXxYTQq3teGJHIcFX0f)

You must select only ONE object at a time. It is possible to use Window, Cross and the other AutoCAD selection features, but you must select only 1 object.

You can select the symbol or line which should be renumbered.

![](/files/LGLJaPYTiyw24DSSaP7q)

Or you can select an annotation which is associated (linked) with the symbol or line.

![](/files/j42KhMt21iQE9FNQ98do)

If you want to use Windows, Cross or any other multi-selection option, then make sure you select only one symbol.

![](/files/puptuFlFm8MiNrn7TqVz)

![](/files/5k55eSOP3Apg8tg9Np0a)

If you are done you can press ESC or Return.

![](/files/91rc4rWS5bvOK3r33A5D)

When you select a property (e.g. Number)...

![](/files/5S0W8dld12w576EsB6jb)

... and you then select a symbol or line which doesn't have this property you will get the following message in the command line:

![](/files/BPL1rDyPbRBa8EcGd8ML)

If you select nothing, then the command will also terminate.

![](/files/Jqy7jmqSwDteH0SPyjea)

If you want to undo the last renumbering you just use CTRL+Z once and all renumbered values will be reset.