Click to edit, Select to apply effect, click items of toolbar to toggle effects.
Horizontal-Rule can be insert by click「...」on the toolbar or just type「... 」/「--- 」/「*** 」at line start. Note that there's a SPACE at the end of a command.
To link or unlink, please press the ENTER key after you filled the input field with your a link. A link can be unlink by apply an empty value to the input field.
You can quote text by type「>」at line start.
What about add underline to text? "Stay Hungry, Stay Foolish - Steve Jobs".
A code block is also support by type 「```」 at line start and press SPACE.
For more, please checkout: https://github.com/sofish/pen#readme