This page deals with the following categories of options in the Layout tab:
Manipulators Dimension Manipulators
These settings can be used for any type of manipulator (texts, leaders, center lines, dimensions and so forth).
Specify the reference size that should be used for manipulators. In the case of texts, for example, this reference size corresponds to the diameter of the rotation manipulators.
By default, the reference size is set to 2mm.
Check this box if you want to make manipulators zoomable.
By default, this option is selected.
These options let you define which manipulators you will visualize and therefore use when creating and/or modifying dimensions:

If you drag select one overrun manipulator, both overrun extension lines are modified. To modify only the selected overrun extension line, use the Ctrl key. You can also double-click on the manipulator and enter the new value in the dialog box that appears.
By default, the Creation and Modification options are not selected.
If you drag select one blanking manipulator, both blanking are modified. To modify only the selected blanking, use the Ctrl key. You can also double-click on the manipulator and enter the new value in the dialog box that appears.
By default, the Creation option is not selected, and the Modification option is.
Allow inserting a text before, without using the Properties dialog box. For this, you will click on the manipulator and enter the new text in the dialog box that appears.
By default, the Creation and Modification options are not selected.
Allows inserting a text after, without using the Properties dialog box. For this, you will click on the manipulator and enter the new text in the dialog box that appears.
By default, the Creation and Modification options are not selected.
Lets you move only the dimension value.
By default, the Creation and Modification options are not selected.
Lets you move only the dimension line by dragging it to the new location.
By default, the Creation and Modification options are not selected.
Lets you move only the dimension line secondary part by dragging it to the new location.
By default, the Creation and Modification options are not selected.

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