fill specifies the amount of fill in the range 0 to 1 inclusive.
colour_value is the RGB value of the fill colour.
N is a integer constant giving the length of the bar in average
options may include no_border and percentage, and one of left_right,
right_left, top_bottom, bottom_top. percentage adds a progress indicator (in
the form of a percentage) to a horizontal bar only.
[panel=val] has been added to attach the bar to a %SB panel. val is the integer value of a %SB panel. The progress
bar is given [ms_style] attribute and appears in the given panel of the status bar.