Association vs Class as SysML CASE: Webel $arg$ and $opt$ help

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Tutorial
[TECHNICAL SLIDE TRAIL] The Webel libraries for Wolfram Mathematica: With SysMLv1 models.
Section
SECTION: The Webel '$opt$' and '$arg$' help holder conventions for options and arguments in the Wolfram Language
Topic level
ADVANCED
Mathematica keywords
Association
MTools
MTools::Class
Webel Mathematica keywords
help holder
'$arg$'
'$opt$'
Keywords
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If you aren't interested in complex Systems Modeling Language (SysMLv1) representations of Wolfram Language code by all means simply skip these slides and visit this slide instead for some more Mathematica-oriented examples!
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Association as SysML: CASE: Webel @RuleMap and @ArgsMap «pseudo» blocks. Very "fiddly" to represent in a SysML Block Definition Diagram!
Notes
[NAMING, PATTERN, POLICY]{STRICT} Webel: Mathematica: CONVENTION: Argument help holders use a String variable with the prefix '$arg$', a related '$info$arg$' String, a 'def$arg$' default value expression and/or 'req$arg$', and optional '$warn$arg$', '$tip$arg$, '$lab$arg$', 'type$arg$'..
[NAMING, PATTERN, POLICY]{STRICT} Webel: Mathematica: CONVENTION: Option help holders use a String variable with the prefix '$opt$', a related '$info$opt$' String, a 'def$opt$' default value expression, and optional '$warn$opt$', '$tip$opt$', '$lab$opt$', and 'type$opt$' indicator ...
Snippets (quotes/extracts)
Visit also
The Webel SysML4Mathematica recipe for modelling Wolfram Language code in Systems Modeling Language (SysML) for Model-Based Systems Engineering
Visit also (backlinks)
Related slides (includes other tutorials)
The Webel '$opt$', 'rule$opt$', '$arg$', 'rule$arg$' and supporting '$k$' conventions for "help holders"
Related slides (backlinks, includes other tutorials)
The AOR Map (Arguments, Options, Rules): Integrated ::usage, HelpF`/HelpO` registration, and Options[] (without MTools)
The AOR Map (Attributes, Options, Rules) Association: Example: aor$f$helpClass
The AOR Map as SysML Blocks with Rules