List of Alt Codes for entering Bullets and Symbols. Alt Code, Symbol, Description. Alt 1, ☺, White Smiley Alt 16, ▻, Play Forward. Alt 17, ◅, Play Reverse. In digital electronics, analogue electronics and entertainment, the user interface of media may include media controls or player controls, to enact and change or adjust the process of watching film or listening to audio. These widely known symbols can be found in a multitude of software . The play symbol also serves as a logo for the Google-owned video sharing. Is it like this? Pause symbol: Click the image to open in full size. Play Symbol: Click the image to open in full size.