Ah, there it is, in the Pluggy docs... I looked online at the OBSE docs and the TESCS Wiki, but didn't think to check the docs that came with the package. Thanks!
Speaking of which, I was also trying to see if there's a limit to 1) OBSE string sizes, and 2) the amount of text you can put into a book (in particular, the book you open with OpenTextInput). Any ideas?
I know that ToOBSE stops working if the Pluggy string is more than 16384 (signed short max) characters long, so it wouldn't surprise me if that is the limit for the things you ask as well. I seem to recall that kyoma has mentioned the same max size for his journal mod.
For the record, I use ToOBSE in both Enhanced Economy and Map Marker Overhaul, and it works fine as long as the string size isn't too long (see above). Unfortunately, the strings I work with may be longer, so I use a loop where the pluggy string is divided into 10,000 char long chunks before calling ToOBSE on it.