<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> # If it's not "r", "w", "x", or "-", it indicates that<br>
# one of the high-order (S/s=4000, S/s/L/l=2000, or T/t=1000) bits<br>
<br>
So l is setting a mode bit of 2000, i.e. set group ID.</blockquote><div><br></div><div>ty <br></div></div></div></div>