iable if it exists,
or from a compiled-in value otherwise.
<P><DT><A NAME="M5"><B>itcl::patchLevel</B></A><DD>
When an interpreter is created, <B>[incr&nbsp;Tcl]</B> initializes this
variable to hold the current patch level for <B>[incr&nbsp;Tcl]</B>.
For example, the value &quot;<B>2.0p1</B>&quot; indicates <B>[incr&nbsp;Tcl]</B>
version 2.0 with the first set of patches applied.
<P><DT><A NAME="M6"><B>itcl::purist</B></A><DD>
When an interpreter is created containing Tcl/Tk and the
<B>[incr&nbsp;Tcl]</B> 