In Trello, record notes in the Description field.
- Click task.
- Click the Description field.
- Type the details (use checklist to record all future next actions).
- Click Save.
For **Italics and bold in Descriptions**, use asterisks on both sides of the text (touching it):
- *Italics* = one adjacent asterisk on each side.
- **Bold** = two adjacent asterisks.
- ***Italics and bold with three asterisks*** = three adjacent asterisks on each side.
For more formatting options, see https://help.trello.com/article/821-using-markdown-in-trello.