DPlot

Is there a way to have two different curve styles in the same window. For exempe a bar chart with the data and a solid line for the best fitted normal distribution.
All the best, Francois Mignard

Francois,
No, sorry. There is no way to do that currently. At least not easily. You can fake a bar chart using a normal linear x, linear y scaling and in effect drawing the bars yourself. For every x,y you'd have

x-w/2,0
x-w/2,y
x+w/2,y
x+w/2,0

where w is the bar width in data space. You could then use "Fill Between Curves" to color the "bars". This is of course way too much trouble to be a practical suggestion, but if you are in a hurry it will do the job.