[ForOldHack]

Does it crash the tester?

https://invisible-island.net/ncurses/tctest.htm

[webpro]

There is some recovery in the lexer, but would love to learn what would make it crash! The url you provide gives a 404.

[teddyh]

  s/htm/html/

I.e. <https://invisible-island.net/ncurses/tctest.html>