From 8aa68113784b7917cce3c305163d6836893018b0 Mon Sep 17 00:00:00 2001
From: Alfred Xing <alfredxing@users.noreply.github.com>
Date: Fri, 27 Mar 2015 08:49:45 -0700
Subject: [PATCH] Update docs to reflect addition of history operator

---
 README.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/README.md b/README.md
index a60f2d4..9f736a9 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,10 @@ This is probably the mode you'll want to use. It's like the `python` shell or `i
 -15
 > 3pi^2
 29.608813203268074
+> @+1
+30.608813203268074
+> @@@*2
+-30
 > ln(-1)
 NaN
 ```
@@ -46,6 +50,9 @@ calc supports all the standard stuff, and I'm definitely adding more later (also
 ##### Constants
 `e`, `pi`, `π`
 
+##### History
+Previous results can be accessed with the `@` symbol. A single `@` returns the result of the last computation, while multiple `@` gets the n<sup>th</sup> last result, where n is the number of `@`s used (for example, `@@` returns the second-last result, `@@@@@` returns the fifth-last result).
+
 ### Why not use ...?
 - Google
   - Doesn't work without an internet connection