Properties Editor
Instead of working directly with a web service's source code, you can use the Properties Editor to build and edit your web service. The contents of the Properties Editor change depending on which web service element is selected in Design View. For example, when a method is selected, the Properties Editor displays the method's conversational, buffer, and XML related properties; when a database control is selected, the Properties Editor displays the database's data source information. (Note that selecting items in the Structure Pane also changes the contents of the Properties Editor.)
You can edit an element's properties directly from the Properties Editor; any changes made in the Properties Editor will be reflected in the source code automatically.
The Description Pane provides a synopsis of the item currently selected in Design View. The Description Pane is good place to learn about the different kinds of elements within a web service. (You can collapse or expand the Description Pane by clicking the chevron in the upper right hand corner.)
The Tasks Pane provides a list of possible actions for the currently selected item in Design View. Click on an action from the list to invoke the action.