uvLog is a helper for application debug. Why and when do You need uvLog? Not always users can tell You what was selected and how text fields was filled. Necessary window can be hidden by another window. Now You can see all actions by "users's eyes".
User presses Rec button first (before any actions with your program).
Any actions with your program.
User presses Stop button and then Send buton to Create a report. That's all. The film about user's actions during last half minute is ready for emailing. Usually it is a report about a bug in your program. The email Template can be already completed. There is no need to write anything else.