Glossary

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C
C*
C1
C2
C3
C3I
C4
CA
Can
Cat
CBA
CBC
CCB
CCI
CCO
CDR
CDS
CF
CFD
CFE
CI
CIA
CIK
CIP
CK
CKG
CKL
CM
CMP
CMS
CN
CNK
COR
CPC
Cpi
CPS
CPU
CRB
CRC
CRO
CRP
CSA
CSC
CSE
CSM
CSO
CSS
CTY
CUP
CVA
CWC
CDR
  • Critical Design Review.
  • To skip past the first item from a list of things (generalized from the LISP operation on binary tree structures, which returns a list consisting of all but the first element of its argument). In the form `cdr down', to trace down a list of elements "Shall we cdr down the agenda?" Usage silly. See also loop through. Historical note The instruction format of the IBM 7090 that hosted the original LISP implementation featured two 15-bit fields called the `address' and `decrement' parts. The term `cdr' was originally `Contents of Decrement part of Register'. Similarly, `car' stood for `Contents of Address part of Register'. The cdr and car operations have since become bases for formation of compound metaphors in non-LISP contexts. GLS recalls, for example, a programming project in which strings were represented as linked lists; the get-character and skip-character operations were of course called CHAR and CHDR.