In this section:
This format code allows you to change the default tab locations. Distances are measured from the left-hand edge of the window or box using multiples of the width of an average character. N is the number of tabs to set and an argument is supplied for each location. For example, %4tl would take four integer arguments specifying the first four tab locations. A complex window layout might contain several %tl (Tab Locations) formats. Each %tl format takes effect for subsequent text and controls and cancels any previous one. If you use the grave accent modifier with %tl (Tab Locations), then the tab locations are specified as DOUBLE PRECISION values.