This document lists utf8 characters which can be used to draw diagrams.
╭─────────╮ ┬ ┌─────────┐ │ Object │ ├─→ ↓ ←─┤ │ Class │ ⤒ ├─────────┤ ─●➤ ↑ ◯─┤ ├─────────┤ ╰─────────╯ ┴ └─────────┘ ◂▸▴▾ ◃▹▵▿ ∆◯◇△ ➜ ││││ ┼
╭─╮╭─╮ │✓││✔│ ╰─╯╰─╯