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return error('This module is retained for historical and structural reasons; consider using [[Module:Citation/CS1]].')-- For the {{citation}} formatting functions, see: Module:Citation/CS1-----------------------------------------------------------------------NOTES---- NOTE A1: This Lua module was originally designed to handle a mix-- of citation styles, crossing Vancouver style with Wikipedia's-- local Citation Style 1 (CS1) from {Template:Citation/core}.-- However, the conflicting positions of parameters, scattered-- in twisted locations across this module, led to a separate-- variation just to untangle the CS1 format of citations.---- NOTE D2: The placement of dots and other separators between the-- displayed parameters has been a continual headache, to keep-- coordinated with the data in parentheses "(data)". There-- has been a need to pre-check for the existence of related-- options, to keep from putting double-dots ".." in some cases.-- In particular, the omission of the "title=" parameter has led-- to several cases of a spurious dot ". ." because the original-- design had treated the title as a mandatory parameter.--------------------------------------------------------------------------