Editing Colon classification (section)

== Organization ==
The colon classification system uses 42 main classes that are combined with other letters, numbers, and marks in a manner resembling the [[Library of Congress Classification]].

=== Facets ===
CC uses five primary categories, or facets, to specify the sorting of a publication. Collectively, they are called ''PMEST'':

{|   class="wikitable" 
|- 
! Indicator !! Facet
|-
| style="text-align: center;" | '''<nowiki>,</nowiki>''' || Personality, the most specific or focal subject
|-
| style="text-align: center;" |'''<nowiki>;</nowiki>''' || Matter or property, the substance, properties or materials of the subject.
|-
| style="text-align: center;" |'''<nowiki>:</nowiki>''' || Energy, including the processes, operations and activities.
|-
| style="text-align: center;" |'''<nowiki>.</nowiki>''' || Space, which relates to the geographic location of the subject.
|-
| style="text-align: center;" |'''<nowiki>'</nowiki>''' || Time, which refers to the dates or seasons of the subject.
|}

Other symbols can be used to indicate components of facets called isolates, and to specify complex combinations or relationships between disciplines.

=== Classes ===
The following are the main classes of CC, with some subclasses, the main method used to sort the subclass using the PMEST scheme and examples showing application of PMEST.

:z [[wiktionary:generalia|Generalia]]
:1 [[Universe of Knowledge]]
:2 [[Library Science]]
:3 [[Book science]]
:4 [[Journalism]]
:A [[Natural science]]
:B [[Mathematics]]
::B2 [[Algebra]]
:C [[Physics]]
:D [[Engineering]]
:E [[Chemistry]]
:F [[Technology]]
:G [[Biology]]
:H [[Geology]]
::HX [[Mining]]
:I [[Botany]]
:J [[Agriculture]]
::J1 [[Horticulture]]
::J2 [[Animal feed|Feed]]
::J3 [[Food]]
::J4 [[Stimulant]]
::J5 [[Oil]]
::J6 [[Drug]]
::J7 [[Fabric]]
::J8 [[Dye]]
:K [[Zoology]] 
::KZ [[Animal Husbandry]] 
:L [[Medicine]]
::LZ3 [[Pharmacology]]
::LZ5 [[Pharmacopoeia]]
:M [[Useful arts]]
::M7 [[Textile]]s ''[material]:[work]''
:Δ Spiritual experience and [[mysticism]] ''[religion],[entity]:[problem]''
:N [[Fine arts]]
::ND [[Sculpture]]
::NN [[Engraving]]
::NQ [[Painting]]
::NR [[Music]]
:O [[Literature]]
:P [[Linguistics]]
:Q [[Religion]]
:R [[Philosophy]]
:S [[Psychology]]
:T [[Education]]
:U [[Geography]]
:V [[History]]
:W [[Political science]]
:X [[Economics]]
:Y [[Sociology]]
::YZ [[Social Work]]
:Z [[Law]]