Give me 3 key safety reminders for using a-frame ladders

Here are three key safety reminders for using A-frame ladders:

1. Inspect the ladder before use: Look for any visible defects such as broken or missing rungs, split rails, or corrosion 2, 5. Ensure the ladder is in good condition before each use [1].
2. Maintain three points of contact: When climbing or descending, always face the ladder and maintain three points of contact (two hands and one foot, or two feet and one hand) 7, 9, 15.
3. Use the ladder for its intended purpose: Ladders should only be used for the purposes for which they were designed 2, 10. Avoid using the top or top step of a stepladder as a step 5, 7, 11.