There’s a character limit on how long a post can be on the forums. I don’t know exactly what the number is, it may be 2K or 5K or even 10K, but there is a character limit. I hit it all the time when writing OAFL fights.
The way you get around the character limit is you make your post a question post, then reply to it with the rest of the post, and mark that reply as the answer. That’s how I’ve been doing it, anyway.