_JUSTIFY_RIGHT</B></A><DD>
Means that the text on each line should end at the right edge of
the line;  as a result, the left edges of lines may be ragged.
<P><DT><A NAME="M8"><B>TK_JUSTIFY_CENTER</B></A><DD>
Means that the text on each line should be centered;  as a result,
both the left and right edges of lines may be ragged.
<P></DL>
<P>
Under normal circumstances the return value is <B><A HREF="../TclCmd/catch.html">TCL_OK</A></B> and
<I>interp</I> is unused.
If <I>objPtr</I> does not contain a valid jus