Controlling a persistent progress bar
Command line options of the ppbS program are used to control a ppb. Every manner of control over a ppb is managed through a verb and verb arguments. You can have any number of verbs in the command line.
DOS> ppbs create "Working on it..."
Each window created is given a number from 1 to 20 in succession as they are created. This number is used as an argument for other verbs. When a window is created it is located at the center of the screen, plus a small offset if other ppb windows are also open.
When a window is destroyed, and a new window is created it will have the same number as the one just destroyed.