The top left button selects the type of day you are interested in: weekdays or weekends/holidays. The label on the button shows the current setting.
The All checbox controls whether to show all trains or just the trains that stop at the selected stations.
The top right button selects the direction of travel. The label on the button shows the current setting.
The three columns are for train number and start and stop stations. (See map.) The start and stop stations can be selected from the dropdown list controls. Next to the train number may be other symbols:
The next two columns are for train departure and arrival times. A stands for AM and P for PM. @ indicates 6 minute timed transfers at Redwoord City station. * indicates the train may leave up to 5 minutes early.
If you want to learn more about this application and how to contact the author, check out the developer page.