it probably won't change, it's pretty much the same standard in every board. OT requires you to explain your answer if the topic is to answer a question, you can take an extra ten seconds to explain why something looks good to you. it's basically just an extension to the useless post global rule:
- Useless posting
Posts in any area of the forum should be kept on-topic and useful. If a post has little content or does not contribute to the discussion at hand, it may be infracted at a moderator's discretion. Each section also has its own more specific rules about what constitutes an appropriate post.