Ability to add a Priority tag to To-do's

What is the challenge?

When I have a list of To-do's for the day or week, it is hard to tell which ones have the highest priority and should be worked 1st.

What is the impact?

I have to read through all to refresh my memory and find the ones that need attention 1st.

Describe your idea

Ability to add High, Meiudm or Low priority tags to my To-dos and/or make them different colors. Would also be nice to have formatting tools available to bold or color certain words.