[para] The parameter DSL is implemented in [package cmdr::parameter].
[para] The specification is supplied with the instance constructor and
processed immediately. This is different from officers and privates
which defer processing until use. When a parameter is declared the
containing private is in use, and so is the parameter. Thus no delay.
[para] The DSL commands map to instance methods as shown below:
[list_begin definitions]
[def [cmd alias]] [method Alias]
[def [cmd default]] [method Default]
[def [cmd defered]] [method Defered]
[def [cmd generate]] [method Generate]
[def [cmd immediate]] [method Immediate]
[def [cmd interact]] [method Interact]
[def [cmd label]] [method Label]
[def [cmd list]] [method List]
[def [cmd no-promotion]] [method NoPromote]
[def [cmd optional]] [method Optional]
[def [cmd presence]] [method Presence]
[def [cmd test]] [method Test]
[def [cmd undocumented]] [method Undocumented]
[def [cmd validate]] [method Validate]
[def [cmd when-complete]] [method WhenComplete]
[def [cmd when-set]] [method WhenSet]
[list_end]
