For more information on the dragDropSpec attribute, refer to Using the dragDropSpec attribute

The enabled property specifies whether or not the part is available for selection. If true, the part's contents are available for selection.

The helpFile property is the name of the help file associated with the part.

The helpKeysId property is the ID of the keys help associated with the part. The ID can be a string or an integer value.

The ID must exist in the help file associated with the part.

The helpTitle property is the title of the help window associated with the part.

The helpTopicId property is the ID of the help topic associated with the part. The ID can be a string or an integer value.

The ID must exist in the help file associated with the part.

The partName property specifies the name you want to use to describe the part. For nonvisual parts, this text appears under the icon for the part on the free-form surface.

The name of the part can consist of alphanumeric characters, and must be different from those of all other parts on the layout surface.

If you do not specify a part name, VA Smalltalk generates a unique name based on the class name of the part.

The width property specifies the amount of horizontal space occupied by the tool separator button. You can also use the mouse to resize the tool separator button in the Composition Editor.