# Modify arc dimension

Arc dimensions can also be modified afterwards, like dimension chains, angles and elevation marks. This includes all settings from the dimension style in the upper part of the dialog box.

In the lower part of the dialog box there are settings that are only created when the arc dimension is generated. Therefore they are not related to the dimension style. The following settings can be changed there:

**Layer**: This displays the layer to which the selected arc dimensions belong. By changing the layer, all selected arc dimensions are assigned to the new layer.

**Arc dimension was created**: The program can distinguish whether a dimension originates from a file stored by the CAD program or was entered manually in the drawing program. This information is used when inserting another file into the same view window. With the program version 'Drawing Program' you can set whether the content of the view window should be completely deleted before inserting, only the elements from a file, or nothing at all. This can be manipulated by changing the assignment of individual elements here.

To modify arc dimensions, any number of arc dimensions (dimension arrows) can be selected at once. When multiple dimension arrows are selected, it can quickly occur that some of the arrows have different settings for one or more options. Since the program can display only one setting per option, three asterisks (\*\*\*) appear in the affected field. This immediately indicates that the selected dimension arrows have different settings in that field. As long as you do not change the setting in such a field, the individual dimension arrows retain their respective settings. However, as soon as you change the setting, all selected dimension arrows receive the new setting.
