The Diagrams tab in the Model Browser represents diagrams created in your project. Just diagrams grouped by types that are used in your project are listed in the Diagrams tab in the Model If the Diagrams tab is hidden, from the Window menu, select Diagrams. You can change some Diagrams tab properties in the Environment Options dialog the Browser options group. The Diagrams tab consists of the following two components: The Diagrams tab toolbar contains the following button: Button Tooltip text Description Collapse all of the currently elements in the Containment tree. Collapses only selected node and all subnodes in that node. Group by Groups diagrams into packages by diagram types. Group by Groups diagrams into packages by the first symbol Favorites Opens the Favorites menu for choosing Quick Find Opens the Quick Find dialog. You can work with diagrams in the Diagrams tree using the commands available from the selected diagram's shortcut menu. The shortcut menu contains the following commands: Command Function Open Opens the selected diagram. Print Opens the Print dialog. Group by Diagram Type Groups diagrams into the packages Select in Containment Opens the Containment tab and selects
Browser, not all diagram types as it was in earlier versions.
To open the Diagrams tab, do one of the followingDiagrams tab toolbar
Collapse All 
Collapse Selected Recursively 
Diagram Type
Diagram Name
of their name, when the model contains more
than 99 diagrams.
to do one of the following:
The same action you may perform using the shortcut menu of the Diagrams tree.Working with model elements in the Diagrams tree
according to the diagram type.
Tree
the current element in the Containment tree.