The spell Codespeak has a duration of 10 min/level, and it allows for targets to write things in the resulting magical language. How much can a person write in 10 minutes? I ask because I intend to write something very very long, long enough that it may or may not be possible to complete in the span of 30 minutes - the duration you'd get if a minimum-level wizard casts it. (I don't care to disclose further details. Better to avoid getting sidetracked.)
There are no rules for this, so it would be completely up to your GM.
If it helps, according to wikipedia the average for adults is 69 letters (about 13 words) per minute. Obviously different languages and scripts would be different.
If I had to rule, I think 1 word per point of INT would be pretty fair.
Dang, you deleted the one I was responding to.
I would look for other spells that copy text, and I think there's an oracle mystery that does it too, those would probably help or say how much you can write in a half hour.
Oof, 13 in a minute? That's not nearly enough.... probably gonna be a multi-day project then, unless I can get a wand of Codespeak or a high-level caster to prepare the spell lots of times. Oh well, it'd be worth it.
Thanks for the help!