Starcraft build order terminology

sc2-build-orderstarcraft-2terminology

Most guides I've seen to builds in SCII I see a list of items next to non-sequential numbers. Example. What do the numbers represent?

Best Answer

It tells what your supply count is at when the command to create the item is at.

for example:

13 gate

this means, if you have used 13 supply (which means 13 probes), build your gate(way) then.

Elsewhere in the linked answer there are messages like:

2 Gate Rush

Which means, rush with units after you have two gate(way)s