Hi, At last week bachotex we (Tove, Mikael, Willi, Hans) cinducted the first in a series of experiments and presentations dealing with accessibility. After all, why bother more about pdf than of the tool that makes it. - we tested if qr codes were easier on users than tex error messages (experiment conducted with high end wooden ear-tags with qr codes made by Willi, who else) because after all humans are good in pattern recognition - we (read: Tove, well known from the "ts" unit) tested to what extend colors could be recognized (after all in Sweden PDF documents have to obey very strict rules wrt color); we will report later on this promissing "flagged pdf" (with color light bulbs triggered by pdf) experiment in an article - as side track (okay: logical follow up) we checked how users react on more vivid visual feedback (this is already supported but the manual was on purpose not yet added to the distribution); we will follow up on this at the context meeting You can do part of this experiment by adding this to the top of your file: % signal=qr (There's also a command line option plus a related script. The next upload will have the preliminary "signals.pdf" manual, just in case you have the needed equipment.) In that case an error will pop up a qr code. The idea is that after while you (or your mobile phone) will recognize these messages easier than parsing a log. It also fits more in todays paradigms. We might eplore easy installations with qr codes because after all that's how things are done these days. So, thanks to Tove, we ended up in modern times. Stay tuned, Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------