Puzzle of the Day

Let's keep this puzzle niiice and simple. What do each of the items below remove?

         

Bonus round: An item called the "Pop-O-Matic" was invented to prevent the removal of what?

Check back tomorrow for the answer, a shoutout to all the solvers, and a new puzzle!

Friday's puzzle:

Webmasters of a certain era are likely to have used a piece of software called Hotmetal (usually styled as a mix of capital and lowercase letters). The name Hotmetal cleverly references two different technologies invented in 1884 and 1993, both of which are descendants of a world-changing invention from around 1440. What are these three technologies?

Answer:

Hotmetal—or HoTMetaL—was a tool for web publishing using HTML (1993). The name also referred to hot-metal typesetting (1884), the most famous incarnation of which was the Linotype machine. Finally, both of these publishing technologies are part of the lineage established by the Gutenberg printing press (c. 1440).

Huzzah to the full (💯) and partial solvers: Leo S., Nicholas, Maddy, Peter M., Harper (💯), Jessica, Zachary Z., and Zachary S. (💯—this is kind of his thing!).