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All good CAD tools use a scripting language inside of a compiled application. The scripting languages tend to look like either perl, lisp, or forth.

The core application is typically written in C or C++. Many features are implemented in the scripting language. The scripting language is also documented and delivered to the customer to use for customization.

Customization is good for keeping customers, who's cumulative effort tends to lock them in.

Compiling the underlying application also makes it easier to implement a software licensing scheme.

Examples of CAD tools with this approach are made by Mentor Graphics, Cadence, AutoDesk, and *many* others. Some of the CAD systems use perl, either embedded as the extension language or as an independent executable.

It should work perfectly the first time! - toma

In reply to Re: Commercial perl software? by toma
in thread Commercial perl software? by eduardo

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