This line of thinking was the thought process behind the Systems Modeling
Language (SysML), an open standard developed and managed by the Object
Foreword by
Richard M. Soley
x Foreword
Management Group (OMG) and its hundreds of worldwide member companies.
OMG ??™ s SysML has quite a lot of positive aspects:
?– It is based on (an extension of a subset of) the OMG ??™ s own Unifi ed Modeling
Language, or UML. Thus software developers comfortable with UML can
move to SysML easily and tool developers with UML tools can easily support
SysML as well.
?– It is graphical. I have always been struck by the way software developers
will share design with other developers using graphics (boxes and lines),
but then write (for example) ??? C code ??? when communicating that design
to a computer. Likewise product engineers will work out the details of a
family of products using graphs, boxes, and lines but then outline those
choice points using a textual approach, e.g. PDES/STEP. Graphical languages
are a natural choice for design and have been used for thousands of years
(witness building and ship blueprints, electrical circuit diagrams, etc.
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