loadlibindex libfile Load the package library index of the library file libfile (which must have the suffix .tlib). Package library indexes along the TCLPATH are loaded automatically on the first demand_load; this command is provided to explicitly load libraries that are not in the path. If the index file (with a .tndx suffix) does not exists or is out of date, it will be rebuilt if the user has directory permissions to create it. Duplicated package names are skipped. This command will also load an index built by mkindex.tcl program supplied with standard Tcl. This file must be named "tclIndex".