arrayutil.tcl - Copy arrays, convert arrays to keyed lists and back, compare arrays, etc.
catchers.tcl - catcher to exit program with message to stderr upon error.
eventloop.tcl - Incr Tcl class for creating and managing event loops.
getargs.tcl - key-value argument pair interface gives Tk-like args to regular Tcl procs.
libmanager.tcl - explicitly force a demand-loaded package to load
prompts.tcl - Interaction management for non-graphical interactive programs.
rfc822.tcl - Read and write headers in RFC822 format.
rfc931.tcl - Perform RFC931 authentication requests on specified sockets.
spawn.tcl - Fork a subprocess, redirecting standard input, output and error to pipes.
stanza.tcl - Read and write text in OSF Stanza format.
timedate.tcl - Time/Date Calculation Functions
xkeylget.tcl - Extract one or many elements from a keyed list.

