always have some margins. How can I get rid of them?</a></li>
<li><b>11.</b> <a href='#q11'>How can I put a background in my PDF?</a></li>
<li><b>12.</b> <a href='#q12'>How can I set a specific header or footer on the first page?</a></li>
<li><b>13.</b> <a href='#q13'>I'd like to use extensions provided by different scripts. How can I combine them?</a></li>
<li><b>14.</b> <a href='#q14'>How can I open the PDF in a new tab?</a></li>
<li><b>15.</b> <a href='#q15'>How can I send the PDF by email?</a></li>
<li>