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Fourth Annual USENIX Tcl/Tk Workshop, 1996

Tcl/Tk HTML Tools

Brent Welch and Steve Uhler
Sun Microsystems Laboratories


This paper describes tools and techniques that support HTML processing with Tcl and Tk. The tools include an HTML parser, a table-driven display engine, and WebEdit, which is a WYSIWYG editor for HTML documents. The parser and display engine are written as a small library that can easily be added to applications that need to display HTML documents. The library has a modular implementation so that applications can customize and extend the library for specialized needs. In particular, WebEdit extends the library to provide an authoring environment. The editor uses the tag and mark facilities of the Tk text widget as the primary data structure for the representation of HTML within the edited document. The paper also describes the performance issues associated with the text widget and one optimization to its implementation.

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