Prior tae 2013, the CS1|2 templates uised the meta-template {{citation/core}}
. In 2013, as pairt o the WP:LUA project, Wikipedia editors upgraded the CS1|2 series of templates tae uise a single Lua module. Module:Citation/CS1 is the ingine that controls how CS1|2 citations are displayed and how citation data are passed tae external referencing tuils throu COinS metadata. The benefits o the upgrade are enhanced performance, reduced complexity and redundancy, an for the purposes of this page, improved error detection, categorization, an reporting.
Category:CS1 errors is the general errors category and Category:CS1 maintenance is the general maintenance category.