% TTPOST   Post a message to a mailbox (blocking)%%  Usage: ttPost(mailboxname, msg)%%  Inputs:%    mailboxname  Name of a mailbox.%    msg          The contents of the message to be posted.%       % See also TTCREATEMAILBOX, TTTRYPOST, TTTRYFETCH, TTFETCH, TTRETRIEVE%%       TrueTime, Version 1.4%       Copyright (c) 2006%       Martin Ohlin, Dan Henriksson and Anton Cervin%       Department of Automatic Control, LTH%       Lund University, Sweden