Using pattern styled polygons in Tilemill

Question

I'm just learning CartoCSS with Tilemill.

I've got a really simple requirement for styling a polygon but cannot find any hint nowhere.

What is the code for styling simple polygon fills?

For example, like can be seen here:

Black/white hatching pattern

Answer 1

You can easily fill areas with textures and patterns by bringing in external images. You might create the patterns yourself in image editing software such as GIMP or Inkscape, or find ready-made images from resource websites such as Subtle Patterns or Free Seamless Textures.

Taken from the TileMill Documentation where you can find an easy example.