Input, Output, Plots, Views, and Messages can be inspected through the menu system as described below. The Print button will print the contents of the main window.
The selection in the top left box: Girder System, Girder i, or Bracing determines the available selections in the top middle box, and the selection of this box determines the available selections in the top right box. The selections of these three boxes together determines what is shown in the main window area.
The selection in the top middle box determines the available selections in the top right box. The selections in these two boxes together determine what is shown in the main window area below.
See the topic Input Files for information on how the input is organized. See the topic Output Files for information on how the output is organized.