Often a report has so much data, it's hard to follow the line across the page. Customers ask me to 'put lines across the report so I can read it better, like Excel'
I think a more effective technique is to alter the background color of every third line. Here is the code to do that:
if int(RecordNumber/3)/2 = int(int(RecordNumber/3)/2) then crsilver else crWhite
This uses the Crystal 'RecordNumber' variable to determine what line we're on, then runs a simple algorythm against it to give us silver or white for the background color. Place this code in the Section Expert, under the Detail. Click on the Color tab, then the code button and post this in.