What does procedural essay draft mean

Writing an essay you'll need to follow certain steps, including writing "drafts". You'll begin by brainstorming what you want the content within your essay. Then, you will write a "rough draft". You're encouraged to put down the rough draft for an hour and then return to it and read it. Find things that may need to be changed, find errors, enter more content. Then, you will have your final draft of your essay. It may take several "rough drafts" to get to your final draft and then eventually to your ready-to-be written essay.

I have no clue try asking a teacher