1) Added a background icon to almost all the pages.2) Changed the colors of the top bar and the bottom bar.3) When the icon at the bottom of the screen is selected, the background of the icon is changed.4) For the check seat part, when the seat is found on the exam day, there will be a link to the room where the user's seat would be. If the link is clicked, it will bring up the Map to show where the building is.5) For the Remove ID/Course No. part, there is now a warning to make sure if you really want to remove the ID/Course No.6) For the Valid Course Numbers part, users can now add or remove course numbers. To remove a course number, just tap the course number and drag it to the left. Then tap the "delete" button appeared at the right. The course number added by clicking the "+" sign at the top right corner can now show up immediately.