Variable: DEA_REGISTRANT_TYPES
constDEA_REGISTRANT_TYPES: readonlystring[]
The DEA-registration prefix letters @cosyte/synth draws a synthetic DEA number's first character
from. A real DEA number is <registrant-type><last-name-initial> + 7 digits; the first letter is the
registrant type (A/B/F/G/M/P/R/X are the widely-published values; the second letter is the
registrant's last-name initial). These letters are a fact about the number's shape, not
copyrighted prose - they only shape the value; the synthetic guarantee is the deliberately-invalid
checksum (see dea / isSyntheticDea).