You’ve got one chance on a video to vote up or down. Touch it the first time, it’s up. Touch it the second time, it’s no longer up. Touch it a third time, it’s up.
That’s an on/off switch.
10 posted on 01/10/2019 6:33:28 PM PST by mairdie
(http://www.henrylivingston.com/theman/atlocustgrove/medical/electricity/pp096-7.htm)