What is a file extension?  Should file extensions be displayed?

A file extension is part of a file name that identifies the program that is to launch when the file is double-clicked.  Yes, I think they should be displayed.

WE #2- Attendance

My definition of attendance the action or going regularly to be places at a certain time whether it a job, meeting, appointments, etc.  I can improve on my attendance by stop waiting to the last minute to get to an appointment.  There are multiple things that could help improve attendance more and that’s alarm clocks, maybe have a family member awake one on the appropriate time, and much more.