# View Panel
The view panel is located on the left side of the graphical viewport, which mainly manages the view information, annotation information, etc. The interface is as follows:
Main functions and operation mode:
- View panel, the basic view and custom view can be managed and recorded:
- The current active view is displayed with a blue breathing frame around it;
- Right-click on the basic view to provide "Activation" and "Orientation only" options;
- Activation: control the direction of the 3D annotation, and the annotation size is located on this view;
- Orientation only: for view orientation only, the added annotation is still on the activated view; Different views can be specified between the active view and the oriented view only;
- Right-click on the custom view to display "Active", "directed only", "Rename", "Delete", "Show associated PMI", "Hide Associated PMI" options:
- Activation: Control the direction of the 3D annotation, and the annotation size is located on this view;
- Orientation only: for view orientation only, the added annotation is still on the activated view; Different views can be specified between the active view and the oriented view only;
- Rename: Redefines the view name;
- Delete: Deletes a custom view; (This option is not available when the view is active);
- Show associated PMI: Shows all annotation information created on this view;
- Hide Associated PMI: Hides all annotated information created on this view;
- Classification records all kinds of annotation information, including "size", "label", "benchmark", "benchmark target", "shape and position tolerance", "surface roughness", "welding symbol", right click on the annotation information to provide the following functions:
Note:The plane where the three-dimensional annotation is located is called the "imaginary datum plane", and the imaginary datum plane is preferentially parallel to the activated view.
- The dimensions and the live view are the XY plane, the length of a line marked in the X direction, then the imaginary datum is parallel to the XY plane;
- If the active view is the XY plane and the length of a line in the Z direction is marked, then the imaginary datum can not be parallel to the XY plane.