yes your link works and points to the right place. It now reads https://forum.arduino.cc/t/serial-input-basics-updated/382007
the old link was http://forum.arduino.cc/index.php?topic=396450.0
I had collected many keyboard shortcuts over time to quickly answer and guide newbies to the correct tutorials. for example typing Serial! would be automatically replaced by the formatted answer I had in the first post.
Have 'intra-forum' links to other posts been migrated ?