Factorio Forums

Is there any documentation on how the Order string works in technology.lua?

I have written a wall upgrade mod which I want to appear in the tech window after stone-walls, and currently, once researched, it is appearing before.

It appears in the right place in the tech tree, however.

It would be handy therefore to know how the three letter "a-k-a" string works.

Order strings in Factorio (recipe order strings included) just look at the alphabetical order of them. The generic letters used are just the devs way of having them appear in the specific order