Add the lineal/ruler tool.
I cannot use OneNote as a functioning tool for my classes as a maths teacher without the ruler tool.
Please also add the "maths" functions from the desktop app to the iPad app.
i really need this tool, this would give onenote for ipad a real step forward
Please add the ruler, it would make my life as a student using OneNote for all my schoolwork so much easier.
this would add usability for students.