27.5.2 Tree area

The Tree area produces a tree of the current system, together with all its membersThe generic facilities available to all tree views throughout the environment are available here; see Manipulating Graphs for details.

• Double-click on a filename to display the file in the editor.
• Click on an unfilled circle alongside a system name to display its members.
• Click on a filled circle alongside a system name to hide its members.
• Select either a system name or a file name to display details in the Description area.

You can operate on systems and files via the context menu, which offers commands such as Concatenate... and Search Files... for systems, and Compile and Print... for files. The system commands are also available in the Works > Systems menu. If no items are selected, the commands apply to the current system, whose name is printed in the System area.

To traverse the system hierarchy, expand a system node in the tree. If the destired parent node is not in the tree, choose Works > Systems > Parent . The parent of all systems defined in the image at any time is called the ROOT-SYSTEM .

To see the souce code definition of a system, double-click its node in the tree or do Works > Systems > Find Source or click .