P: Priority. Priority Level is your rank the importance of a specific To Do Item. Priorities are evaluated in Alphabetic and Numeric sort order. Priority A is more urgent that B.
L: Linked Appointment. You will see a checkmark in this column if the Task Item is linked (or associated) with a contact in your contact list.
N: Notes. You will see an icon of a page to indicate that you have some notes that are attached to the Task Item. A single click in this column will open the Task Item directly into the notes editor.
This help article applies to Time & Chaos 7