--- /dev/null
+[Forest-fire model]
+=================
+
+
+Rules
+-----
+* A burning cell turns into an empty cell
+* A tree will burn if at least one neighbor is burning
+* A tree ignites with probability *f* even if no neighbor is burning
+* An empty space fills with a tree with probability *p*
+
+
+[Forest-fire model]:http://en.wikipedia.org/wiki/Forest-fire_model