How can I get the SP4 pro pen to open the handwriting app?

[Windows Central Question]

I have a new SP Pro 4. Am enjoying the pen, but would like to open the handwriting interface with a single click of the pen top. Can anyone identify the app I need to open?

thanks...

 

[xandros9]

I do not believe it can be set to anything other than OneNote, but I could be wrong.