added the register link to Bill Joy article

index.md

@@ -13,6 +13,8 @@ text editor in any Unix-like operating system._
 Here is a collection of [vi(1)](https://man.openbsd.org/vi.1)/[ex(1)](https://man.openbsd.org/ex.1) commands and command sequences.<br>
 Tested with [nvi](https://en.wikipedia.org/wiki/Nvi) 1.79 and 2.1.3 (unicode).
 
+[Bill Joy's greatest gift to man - the vi editor](https://www.theregister.co.uk/2003/09/11/bill_joys_greatest_gift/)
+
 
 ## Yank/delete lines
 
@@ -50,6 +52,11 @@ Tested with [nvi](https://en.wikipedia.org/wiki/Nvi) 1.79 and 2.1.3 (unicode).
 </pre>
 
 
+## Remove trailing whitespace from every line
+
+	:%s/\s\+$//
+
+
 ## Remove trailing whitespace from a block
 
 	:'k,'ls/\ *$//
@@ -188,6 +195,16 @@ width = 40
 </pre>
 
 
+## Format whole document
+
+	:%!fmt -s
+
+In your .nexrc
+
+<pre>
+map gF :%!fmt -s<u>&lt;CTRL-V&gt;&lt;ENTER&gt;</u>
+</pre>
+
 ## Reverse all lines, move `m` all lines to 0
 
 	:g/1*/m0