▼Structure

▼Style

▼Font-size (small-large)

▼Color
Color Background-color

▼Other

▼Characters

*PC
 [Ctrl]+[B]: Bold
 [Ctrl]+[I]: Italic
 [Ctrl]+[U]: Underline
 [Ctrl]+[C]: Copy
 [Ctrl]+[V]: Paste
 [Ctrl]+[Z]: Undo
 [Ctrl]+[Y]: Redo

*iPhone (Safari)
 Select a letter & Tap [BIU]