The "guts" of the LHEATcl plugin is a dynamically loadable library (DLL) containing the compiled object files from Tcl/Tk, FitsTcl, POW, etc. Currently, there is just one, monolithic LHEATcl DLL, unlike the LHEA standalone Tcl scripts such as fv where there one DLL for each package (Tcl, Tk, fitsTcl, POW, etc) . This library is placed in your browser's plugins directory. Currently Netscape4.x and Internet Explorer 3.x, 4.x, and 5.0 are supported. Netscape3.x is not supported because the Javascript we use to setup a window to run the tclet in doesn't work in Netscape 3.x. When your browser starts up it scans the plugins directory. If it finds the LHEATcl plugin library, it adds the LHEATcl plugin to its list of plugins and registers the plugin to process files of mime type "application/x-tcl". For details of how this information is stored in the library file, see the documentation for the Netscape plugin SDK.
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