cbarnv was prepared by diane stokes after discussions i started on grads mailing list. cbarnvskipe is an improved version where it is possible to skip label values, and cbarnvbox is another modification for not having the triangles and centering the values.
New vesions of cbar_line2.gs with an option -w for the linewidths. Now the lines are only drawn if linestyle is not equal to zero. The string size definition is turned off, so the user can modify this outside. Version wh will do a legend in a horizontal line.