Hans wrote > unless of course you want to have worse output than possible (tex itself is rather accurate)
Well not really:-) I was just trying to chase down where the warning was coming from (as it isn't mentioned in the manual) and if we're going to ask texlive/miktex to change the default setting for pdftex whether there is any documentation of the minimal advisable level, rather than just documenting it as a change to track changes in luatex. But in luatex, if there is a minimal value, I think it would be more natural if pdf.setdecimaldigits(3) warned (and set to 4) rather than the lua table value being set to 3 with no warning but then getting a warning from the backend later (that is, it would seem more natural to me as a user: if that violates an internal split between backend and main code, I'll just have to re-align my expectations:-) David
