Tcl has '''tm''' commands for managing access to modules
   * ::tcl::tm::path
   * ::tcl::tm::roots

A list of directories (the "module path") is managed by the commands ::tcl::tm::path and ::tcl::tm::roots.  For example, the current value of the module path is returned by the command [[::tcl::tm::path list]].

The command [package require] searches the "module path" directories for modules, which are files named "*.tm".  The name of the module file determines the name and version that are entered into the package database when module directories are scanned.

See http://www.tcl.tk/man/tcl8.5/TclCmd/tm.htm for a full discussion of module filename requirements, resolution of '::' in module names, and translation of '::' to directory separator characters.

See [Tcl modules] for more on modules.

See [Distribution Mechanisms] for a discussion of extension mechanisms in general.

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(1) TM frequently is used as an abbreviation of the word ''Trademark''.

See http://uspto.gov/ [[add other references]] for more info on the legal 
ramifications of a trademark.
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[Category Glossary]
or
[Category Command]