In the part of the tutorial about “escaping” double-quotes within a quoted string, the escape character, “\”, should be labelled “backslash”, not “slash”, to differentiate it from the “/” character–“slash” or “forward slash”.
(Perhaps there is a better way to submit editing suggestions.)
Loving this tutorial–everything has worked smoothly with lots of good ideas.
Thanks for the suggestion Lance! Exactly that makes it more clear and accurate. We’ve updated the online guide with your suggestion: https://rntlab.com/module-4/esp32-web-server-html-in-arduino-ide-part-2-2/
That change will also be in the next eBook update. I’m glad you’re enjoying the course!