Tcl is unmatched when it comes to integrating with other software. You can easily include Tcl as an embedded scripting language in an application, or make existing #C, #CPP, or #Java code look like it was built right into Tcl. The same features make it easy to use Tcl as a control language for special-purpose hardware or protocols, add a new GUI or network interface to legacy applications, and more, and with Critcl you can run C code compiled on the fly.
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