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QUOTE(lraynal @ Feb 28 2008, 01:31 PM) Thank you for your answer, Laurent. I'll give your option a try... -- Nicola

Hi all, I want to visually show the upper/lower limits in a chart, keeping its original scale. For instance, I've a time/pression plot (0-10 bar) and I want to show the valid pressure is between 8-9 bar. Is there a way to show two lines (at 2 specified Y values) or change the background or, more generally, to access the chart canvas and operate over it? Thank you -- Nicola