documentation here.
download gzipped tar file here.
The class is designed to manage the row sorting of the text in an Fl_Browser. Depressing any column button will cause the rows to be sorted by the text in that column. It uses the column_widths() of the associated browser to draw itself. These widths can be changed interactively. A 6-pixel high example (thin bar above the Fl_Browser) is shown at right.
screen shot with sorting by first column