World Modifiers alter the page they are attached to. For instance, placing "lava" in front of "oceans" results in lava oceans.
Modifiers attach themselves to the first word that allows it and is not already attached to another modifier.
For example, if one were to write two books:
coal ore, tendrils, iron ore, tendrils.
And the other book being:
coal ore, iron ore, tendrils, tendrils.
The two ages would generate from essentially the same seed. This would be because in the second book, coal ore would attach itself to the first tendrils, and iron ore would skip over the first tendrils which now belongs to coal ore and attach itself to the second tendrils.
If you would like to test this, remember that the ages described above are not stable at all, and requires several extra pages in order to be stable.
If one were to write:
tendrils, tendrils, iron ore, coal ore.
One would get an age that has double the normal amount of oak log tendrils that is also unstable. This would be because of dangling modifiers. If a modifier is not attached to a word, then it causes instability. In order to prevent instability, always include the "clear modifiers" page at the end of every book.
Colours are tricky. Whenever one experiments with colors, one should always include the "clear modifiers" page at the end of the book in order to keep instability low.
Colours will blend in order to create new colors just like pigments do in real life. If one were to write:
red, blue, sky colour
One would get an age that had a purple sky.