>>626583 (OP)>How are origami recipes made>Is it like a computer program or somethingFor those who are really serious, there are in fact strings of words or symbols that abbreviate the folds.
For example, the crane you posted begins with what we call the "bird base" (step 8). We use this base for many other origami projects, so we all learn how to make it.
From there, your crane uses kite folds, petal folds, and reverse folds. A formula of sorts can be written to describe the entire process.