A page for every nutrient in the RDA tool

If a %DV on your label looks off, or someone asks you to prove where it came from, the Daily Value tool now has a dedicated page for every nutrient. Find it at /tools/rda, with the FDA rounding bands and the amount range behind every %DV a label is allowed to print.
Each page names the exact provision of 21 CFR 101 it comes from. So when a number looks surprising, like vitamin K printing four different %DVs depending on the amount present, you can show exactly why instead of just asserting it.