title: Imagemagick - pngs onto png
body: <p>i've a huge png image (4000x3000, big.png), and i've smaller images (1500x200, small_n.png) .</p>
  <p>I'd like to put the small images onto the big.png based on a starting (x,y) parameter.</p>
  <p>So, for instance I've the small_1.png with the starting point (300, 200), and this point should represent the top left corner of the image. How can I put the small_1.png onto the big.png knowing the starting point?</p>
  <p>I'd like to use imagemagick, or if not possible, any linux commandline tool.</p>
  <p>Thanks.</p>