Revert r63934 -- it was mixing two patches.
diff --git a/Misc/cheatsheet b/Misc/cheatsheet
index 50ffc22..21b3d98 100644
--- a/Misc/cheatsheet
+++ b/Misc/cheatsheet
@@ -46,6 +46,7 @@
-OO remove doc-strings in addition to the -O optimizations
-Q arg division options: -Qold (default), -Qwarn, -Qwarnall, -Qnew
-S Don't perform 'import site' on initialization
+-t Issue warnings about inconsistent tab usage (-tt: issue errors)
-u Unbuffered binary stdout and stderr (also PYTHONUNBUFFERED=x).
-v Verbose (trace import statements) (also PYTHONVERBOSE=x)
-W arg : warning control (arg is action:message:category:module:lineno)