Data Type window displays all the supported data types related to the selected link.

The following table describes each attribute of the data type.

Item	Description
Name	Shows the name for the data type.
Data Type	Shows the basic data type for the name.
Description	Shows the comment for the data type.

Note: If the data type is a structure, you may click to expand or click to collapse the list of its members.

In the data type window, you can:

■ Switch between tag list of the selected tag group and the supported data type by clicking the window tab

■ Cut, copy, paste and delete selected data type using menu commands or key combinations.
You can right-click the number column to display a pop-up menu of editing commands. The editing commands available vary depending on what is selected.

The following table shows the supported editing commands.

Menu Command	Key Combination	Description
Add		Inserts a new structure at the end of the list by using Structure Definition dialog box.
Edit		Edits the selected type by using Structure Definition dialog box.
Delete	DELETE	Deletes data types without copying it to the Clipboard. You cannot delete the data type if it is used in the application.
Cut	CTRL+X	Removes selected data types from the active window and saves them to the Clipboard. You cannot cut the data type if it is used in the application.
Copy	CTRL+C	Duplicates selected data types in the active window.
Paste	CTRL+V	Pastes cut or copied data types before the selection into an active window.

Note that all editing commands require a selection in order to work. To select a data type, click the row on its header number column. To select multiple tags, click the row on its heard column and use Ctrl+Click to add a row to the selection. The editing commands except Add are available only when the selected data type is not basic data type or built-in reserved data type.

■ Add or edit a structure data type by using Structure Definition dialog box. The following is an example of the Structure Definition dialog box.

The following table describes each property in the dialog box.

Property	Description
Structure Name	Specifies the name for the structure. The name must be unique. The name cannot start with a number and cannot be the same as the basic data type or the built-in reserved data type name. The name cannot contain any of the following characters "/\\|(){}[].,'<=+>!?" and space.
Addressing	Specifies the addressing type used to allocate the structure. There are two types:
	Type	Description
	Continuous	Select Continuous to create a structure with continuous word or double word addresses.
	Random	Select Random to create a structure with random addresses.
Alignment	Select Word to make each member word aligned or select Double Word to make each member double word aligned. Only available for the continuous addressing.
Structure Size	The total size of the structure in word.
Structure Members	Specifies the structure's members in the following list.
	Item	Description
	No.	The number of the structure member.
	Name	Specifies the name for the member.
	Data Type	Click the icon to bring up the Select Data Type dialog box and select the desired data type for the member
	Offset	Available when the continuous addressing is checked. Shows the address offset offset in the structure.
	Size	The size in word of the member.
	Description	Type a comment for the structure member.
Insert	Insert a member before the selection. This button is available when the selection is made.
Delete/Cut/Copy	Delete/Cut/Copy all the selections. This button is available when the selection is made.
Paste	Paste cut or copied member before the selection. This button is available when the selection is made.
Move Up	Move the selection one item down in the list. This button is available when the selection is made.
Move Down	Move the selection one item up in the list. This button is available when the selection is made.
OK	Click it to close the dialog box and accept all changes.
Cancel	Click it to close the dialog box and discard all changes.