# Progress Bars

Tinderbox notes may display horizontal or vertical progress bars to track the state of any numerical attribute. The progress bar is specified in the note’s Pattern attribute and is most easily set using the Plot pane of the Appearance inspector.

Progress bars may be horizontal (bar) or vertical (vbar) and fill the body of the note. The progress bar always has a value which is to be represented by the bar; it may be a fixed number or an attribute expression. For example, if the value is $WordCount, the progress bar will represent the number of words in the note’s text.

Progress bars may have optional minimum and maximum values. If no minimum is specified, Tinderbox assumes that 0 is the minimum. If no maximum value is specified, Tinderbox assumes that 100 is the maximum.

Progress bars may also display a target line for any chosen value that lies between the minimum and maximum values.