ically
by the <B>[incr&nbsp;Tcl]</B> library.  Except where noted below, these
variables should normally be treated as read-only by application-specific
code and by users.
<P>
<DL class="description">
<DT><A NAME="M4"><B>itcl::library</B></A><DD>
When an interpreter is created, <B>[incr&nbsp;Tcl]</B> initializes this variable
to hold the name of a directory containing the system library of
<B>[incr&nbsp;Tcl]</B> scripts.  The initial value of <B>itcl::library</B>
is set from the ITCL_LIBRARY environment var