If no SELECTOR is specified a default selector will be used which selects PLANS
in declaration order. Throughout the examples a fairly strict naming convention has
been adhered to. For example, HeadRDPI, which stands for "first rough design plan
for the head". The system does nothing to check or support this. However, such a
scheme is essential for expressing large amounts of knowledge in a language such as
DSPL.
5.3 Plan Example
(PLAN
(NAMEHeadDPI)
(TYPE Design)
(USED-BY Head)
(SPONSOR HeadDPISponsor)
(QUALITIES Cheap)
(INITIAL-CONSTRAINTS None)
(FINAL-CONSTRAINTS None)
(BODY HeadTubeSeat
MountingHoles
Bearings
SealAndWiper
AirCavity
Airlnle ...
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