Did you know that it is possible to bind a text note to a symbol? You can easily do this from the right-click menu on chart or in Watchlist. You can also use keyboard shortcut (ALT+N) to quickly create a note on current symbol.
Symbols with notes have special icons in Watchlist:
Now if you point your mouse cursor on that icon, it will show the note header:
Click the icon to open it in the bottom panel.
Stay tuned for more improvements!