>Hello
>Can you help me. I try to control the interligne in 1/6 '' ou 1/8 '' because i need to print informations on a pre-printed matter but i need to print informations on certains cases .
>The result is very different between printers. So how can i control the printer (spacing , margin, font)?

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You can change the row height of the detail band.
But look out that with a different printer driver the result can differ too.