Using the Program Flow Graph
Program Control Graph lets you understand the structure of a COBOL program by showing what calls are made to and from sections and paragraphs.
The call directions are represented by arrows that have different colors depending on the type of call, for example goto statements, call statements, external references, etc. You can customize the colors from . If you want to change the colors only for the current graph, use the Legend menu at the top.
If you make changes to the source code after showing a Program Flow Graph, the information in the graph will be outdated and a banner at the top of the graph will alert you to this. To re-draw the graph, click Update graph.
The following list shows some of the different operations that you can perform from the Program Flow Graph view:
- Navigate to the code
- Double-click a node to navigate to that line in the source code in the editor.
- Display a code preview tooltip
- Hover over a node or link.
- Change focus mode
- Use
to switch to focus mode in which only a node you select will be highlighted together with its related nodes.
- Displaying a new graph for a node in the current graph
- Right-click a node and select New Graph from Selection.
- Change the layout of the graph
- From the Layout menu you select various layout options such as display the graph from top to bottom or from bottom to top, from left to right or from right to left. You can also zoom in and zoom out the graph.
- Find a paragraph or section in the graph
- Use the
button.
- Merge Duplicate Links
- Click
and in check
Merge Duplicate Links.
- Copy, save or share the graph
- Use the Share menu.