The basic implementation of the progressBar widget allows the setting of the "fraction" property of the GtkProgressBar but using this options requires more on the Tcl-side than it needs to. Combination of the new options -range and -steps along with the new sub-commands step, incr and reset help to simplify matters. For simple lists use the step subcommand along with the the -steps option to indicate the progress of a small, known number of steps where feedback on the completion of each step is required. Setting the -steps option to 10, for example, will set the widget "fraction" property to 0.1 (1/10, i.e. 10%). Following this each time the step sub-command is called, the widget bar will expand in length by 10% until it reaches 100%. The step sub-command accepts an additional argument which will set the text content of the bar. set modules [list \ apple.tcl \ blackberry.tcl ...