Sorry to be off topic here but is there a standard for laying out specification documents like this that i can read up on? When ever I come across these they ar

Sorry to be off topic here but is there a standard for laying out specification documents like this that i can read up on? When ever I come across these they are always well thought out and nicely presented. It would be a nice way to present ideas due to the documents feeling well thought out and structured as apposed to a simple idea scribbled down.