404/CAPTCHA/Error images

Question

I knew I forgot something right before the new design launch today. I didn't get a chance to create custom images for the 404/Captcha/error pages on the TeX site.

Do you have any suggestions?

A few examples from other sites:

Cooking site's 404:

Gaming site's CAPTCHA

Photography site's 404 (Normally for Captcha, we do a "robot" theme.)

The idea is to have these images somewhat light hearted, and reflect the theme of the site. What are your suggestions for this site?

Answer 1

For a 404, there could be a play on some of most common TeX error messages. I think the Undefined control sequence is most appropriate.

As for an image, something simple like this:

\404{Page not found}

! Undefined control sequence.
l.6 \404

Or some variation thereof.

Probably rendered in different styles, to distinguish user input from TeX complaints.

Answer 2

Badness 10000!!

Answer 3

We don't know how you arrived in room 404, but we have been working for a long time to correct all bugs!

Answer 4

Use one of Don Knuth's Road Signs or the Dangerous Bend Sign

Answer 5

What's with something like this:

*\show\page
> \page=undefined.

Maybe in combination with an assign tracing:

{changing \error=0}
{into \error=404}

Answer 6

One possibility is this variant on Martin Tapankov's answer:

\cdiv{Page not found}

! Undefined control sequence.
l.6 \cdiv

Look here if this mystifies you.