--- a/vim.rst	Sat Apr 04 22:29:20 2015 +0800
+++ b/vim.rst	Sat Apr 04 22:31:04 2015 +0800
@@ -67,6 +67,9 @@
 `yy`
     yank current line into register
 
+`yiw`
+    yank current word into register
+
 `p`, `P`
     put register *after*, *before* cursor position