/* Draw a line with slope SLOPE and intercept INTERCEPT.
between the points limit1 and limit2.
If lim_dim is CHART_DIM_Y then the limit{1,2} are on the
y axis otherwise the x axis
*/
/* Draw a line with slope SLOPE and intercept INTERCEPT.
between the points limit1 and limit2.
If lim_dim is CHART_DIM_Y then the limit{1,2} are on the
y axis otherwise the x axis
*/