The "Post-writing" phase refers to each draft, not to one final submission. Each time you prepare to pass a draft to someone to read over, you should go through the following procedure:

• Revise: i.e. review your text with a view to altering, amending and improving the entire message.

• Edit: i.e. prepare the draft by checking your style, word choice, and grammar.

• Proofread: i.e. examine the final typed manuscript to spot any last-minute errors. With a Word Processor, it means using a Spellchecker and Grammar checker, if there is one available.

All three stages are important. We can look at the writing process as follows, beginning with the Pre-Writing stage, narrowing the topic down, writing the report, revising, then editing and finally proof-reading. What we should also factor into the diagram is the element of ‘recursion’, because the movement down to the specifics is never linear.  There is always another shift back to a more general level of revision, where a re-reading reveals something you see can be expressed more clearly. So the diagram might look like this: