Creating a Plane System Grid

	This task shows you how to create a plane system grid. A plane system grid represents a set of perpendicular reference planes. Each line on the grid is a reference plane.
	Before you can create a plane system grid, you must create either: a system in the `Structure Functional System Design` workbench, using the `Structure System` command . See Creating a System in the Structure Functional Design User's Guide. Or a design unit in the `Structure Detail System Design` workbench, using the `Design Unit` command . See Design Unit Creation in the Ship Structure Detail Design User's Guide. The system/design unit you create displays in the specifications tree.
	1.	When you are in the `Structure Functional System Design` workbench, click the plus sign next to the system to expand the tree and display the part. Double-click on the part on the specifications tree. Make sure you are now in the `Structure Functional Object Design` workbench. When you are in the `Structure Detail System Design` workbench, click the plus sign next to the design unit to expand the tree and display the part. Make sure you are now in the `Structure Detail Object Design` workbench.
	2.	Click the `Plane System Grid` button and the `Plane System Grid` dialog box displays. Select a support in the `Support` field in one of the following ways: You can select a plane in the 3-D session or specifications tree. You can select a planar structural object in the 3-D session or specifications tree. You can right click in the `Support` field and select `Select Reference` `Plane`.
	3.	If you choose to right click in the `Support` field and select `Select Reference` `Plane`... ...the `Plane Systems` dialog box displays. For information on using the `Plane` `Systems` dialog box, also known as the Reference Plane Browser, see Using the Reference Plane Browser, Basic Navigation in the Structure Functional Design User's Guide and in the Ship Structure Detail Design User's Guide. Select a plane system from the `Select System` drop down list. The appropriate sub-system displays in the `Select Sub-System` field and a list of planes displays under `Select Planes`. Select a plane from the `Select Planes`list. Your selection displays in the `Key in Planes` field`.` `NOTE:` Do not use the plus sign (+) when keying in a plane name. For instance, you can key DECK.1, but not DECK.+1.
		Click `OK` and you see the plane system grid that you created. The color of the grid lines match the color of the corresponding planes. If planes display as white, the corresponding grid lines display as a CATIA lowlight color. The `Support` field on the `Plane System Grid` dialog box displays the selected plane. `NOTE:` When you select a planar structural object (such as a planar plate), the `Support` field displays the support of the structural object. The `Plane System 1` and `Plane System 2` fields display plane systems based on your selection. These plane systems are perpendicular and complementary to each other.
		`Bounding Box` defines the area where the grid is clipped (using the project envelope). The checkbox is checked by default. The data to define the clipped area is read from `CATShipProjectEnvelope.xml` and stored in the`...\startup\EquipmentAndSystems\Structure` directory. See Defining Project Parameters for more information. Make the `Boundary` field active by unchecking the `Bounding Box` checkbox. When you select a surface or a volume in your 3-D session, you limit the grid. Your selection displays in the `Boundary` field. Click `Preview` to get the effect of the boundary. In the `Display` section: If you check the `Permanent Grid` checkbox, the grid is always visible. If you do not check the `Permanent Grid` checkbox, the grid is visible only in normal view. In the `Labels Visibility` drop down list, you can: Make the text visible at all times (`Permanent`). Make the text visible only in Normal View (`Only in Normal View`). Hide the text (`None`). In the `Labels Position` drop down list, you can position the text: On all sides (`All Sides`). Only at the bottom/left (`Bottom/Left`). If you check `Selectable Points`, you can select points at the intersection of grid lines. This enables you to place an object on the grid just by selecting the appropriate points.
	In each of the following examples `Permanent Grid` is not checked. The images are shown in normal view. The following displays when: `Permanent` is selected from the `Labels Visibility` drop down list. `All Sides` is selected from the `Labels Position` drop down list.
	The following displays when: `Only in Normal View` is selected from the `Labels Visibility` drop down list. `Bottom/Left` is selected from the `Labels Position` drop down list.
	The following displays when: `None` is selected from the `Labels Visibility` drop down list.
	If the plane system is not visible, you can click the `Fit All In` button to make it visible. You can repeat this procedure and create more than one plane system grid. But you can only have one grid visible at a time.
	You can edit the grid to shift the location of the grid.
		On the specifications tree, click the plus sign next to `Working Supports` to expand the tree and display `Plane System Grid` on the tree. Double click `Plane System Grid` on the specifications tree and the `Plane System Grid` dialog box redisplays. Select the plane system grid in your document. `Zoom In` if necessary. When you select a different support on the plane system grid, the `Support` field in the `Plane System Grid` dialog box displays this support. When you select the `Plane System 1` field, and then select a plane system in the specifications tree or in your 3-D session, the selected plane system displays in the `Plane System 1` field. When you select the `Plane System 2` field, and then select a plane system in the specifications tree or in your 3-D session, the selected plane system displays in the `Plane System 2` field.
	Click `OK` and the grid shifts according to your selections.