When a project opens, the Overview Tab is displayed (Figure 4). Other tabs can be selected with the mouse. Some tabs may remain inactive (grayed-out), until the type of information they require is available for the project. The Overview Tab’s Project Summary Information area indicates the Sequence type along with other information that applies to the overall project. The data displayed on this tab is updated as new information becomes available, which occurs when data files are added or removed from the project and when a project computation completes.

When a project is first created, the Computation status message in the upper right hand corner of the application window indicates “Not ready for Analysis” and the Start button is disabled because at least one Read Data file must be added to the project before an Assembly computation can be performed. Other errors in input parameters can also cause this message to appear. Once all such errors have been corrected and at least one Read Data file is added to the project and all options have valid values, the message will change to “Ready for analysis” and the Start button will become active.