The term ''infrastructure'' has a variety of meanings, depending on its use.

For instance, one might consider things like [C] compilers, assemblers, link editors, etc. to be a part of the ''infrastructure'' of a software development environment.

Then, for an application developer, [tcl], [perl], [java], along with their extensions/modules/classes, etc. might be considered a part of the infrastructure - they are the tools which make it possible to build the next layer.

A recent article by [Dan Bricklin] calls software developers to take a fresh look at
software development - to begin to think about developing a software infrastructure that
can last for hundreds of years, rather than a dozen years.  Read http://www.bricklin.com/200yearsoftware.htm for his argument.

For the Tcl core, one might consider its infrastructure to consist of text editors, c compilers,
and a few tools used for installation purposes.



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