When people drop the "at" sign, the test participants stood to one side, toe the start line justification. When they hear whistle signal, the test participants ran fast, until through the finish line.
When the release signal "to" the people who took the stand to toe the starting line up on one side. Upon hearing the whistle for the test run through the finish line as quickly as possible.
When the release signal. "In" the test stand of one foot ชิดเส้น started. When you hear the whistle to signal the test run quickly through the finish line.