This section describes how to add new rungs by inserting rungs above existing ones or by appending new rungs to the end of the program.
To insert a new rung above an existing rung, click on the "insert rung" button on the right hand side of a rung title bar. This will cause a new rung to be inserted above the existing rung.
To append a new rung to the end of the program, click on the "append rung" button on the right hand side of the command bar at the end of the program. This will cause a new rung to be appended to the end of the program.
When a new rung is inserted or appended, it will be empty without any logic or comments. To add logic to the new rung, follow the procedures used for editing an existing rung.
Whenever a new rung is inserted or appended, all the existing rungs will be automatically renumbered consecutively.