Joe, Joe</B> hide Joe, then show Joe gain (whatever is Joe... but I guess it's something which value just changed, so we want to refresh the view)<BR><BR>

Now there are two useful special syntaxes:<BR><BR>One is used to display lignes which have just been projected using the tool. You'll see <A HREF="#part3">later</A> that these lignes are kept in an ordered list; so to display ligne number n you can use the internal name <B>£</B>n (it is actually a shortcut for the real name <B>RL[</B>n<B>]</B> ), with a