3 files changed, 32 insertions, 32 deletions
diff --git a/haskell.html.markdown b/haskell.html.markdown
index be7d8669..9847ef2a 100644
--- a/haskell.html.markdown
+++ b/haskell.html.markdown
@@ -131,7 +131,7 @@ add 1 2 -- 3
 -- with backticks:
 1 `add` 2 -- 3
 
--- You can also define functions that have no characters! This lets
+-- You can also define functions that have no letters! This lets
 -- you define your own operators! Here's an operator that does
 -- integer division
 (//) a b = a `div` b
diff --git a/r.html.markdown b/r.html.markdown
index 5f143150..dd94072b 100644
--- a/r.html.markdown
+++ b/r.html.markdown
@@ -5,7 +5,7 @@ contributors:
 filename: learnr.r
 ---
 
-R is a statistical computing language. It has lots of good built-in functions for uploading and cleaning data sets, running common statistical tests, and making graphs. You can also easily compile it within a LaTeX document.
+R is a statistical computing language. It has lots of libraries for uploading and cleaning data sets, running statistical procedures, and making graphs. You can also run `R`commands within a LaTeX document.
 
 ```python
 
diff --git a/ruby.html.markdown b/ruby.html.markdown
index 99817982..861a94ad 100644
--- a/ruby.html.markdown
+++ b/ruby.html.markdown
@@ -275,36 +275,36 @@ surround { puts 'hello world' }
 # Define a class with the class keyword
 class Human
 
-     # A class variable. It is shared by all instances of this class.
-    @@species = "H. sapiens"
-
-    # Basic initializer
-    def initialize(name, age=0)
-        # Assign the argument to the "name" instance variable for the instance
-        @name = name
-        # If no age given, we will fall back to the default in the arguments list.
-        @age = age
-    end
-
-    # Basic setter method
-    def name=(name)
-        @name = name
-    end
-
-    # Basic getter method
-    def name
-        @name
-    end
-
-    # A class method uses self to distinguish from instance methods.
-    # It can only be called on the class, not an instance.
-    def self.say(msg)
-       puts "#{msg}"
-    end
-
-    def species
-        @@species
-    end
+  # A class variable. It is shared by all instances of this class.
+  @@species = "H. sapiens"
+
+  # Basic initializer
+  def initialize(name, age=0)
+    # Assign the argument to the "name" instance variable for the instance
+    @name = name
+    # If no age given, we will fall back to the default in the arguments list.
+    @age = age
+  end
+
+  # Basic setter method
+  def name=(name)
+    @name = name
+  end
+
+  # Basic getter method
+  def name
+    @name
+  end
+
+  # A class method uses self to distinguish from instance methods.
+  # It can only be called on the class, not an instance.
+  def self.say(msg)
+    puts "#{msg}"
+  end
+
+  def species
+    @@species
+  end
 
 end