note liverpole Yes, [GrandFather], I know about [doc://pack] and [doc://unpack].&nbsp;&nbsp;And although I don't consider myself an expert at them (... yet :-D), I have used them in quite a few programs to date.&nbsp;&nbsp;Anyone who has done socket programming (for example) will certainly have learned how to use them. <p>But how about you?&nbsp;&nbsp;Do you have any stories to share about concepts which you've learned in the recent past? <div class="pmsig"><div class="pmsig-465654"> <hr /> <font size="1"> s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/ </font> </div></div> 567774 567781