diff --git a/spec/basic-concepts.md b/spec/basic-concepts.md
index 442883d..fffb87d 100644
--- a/spec/basic-concepts.md
+++ b/spec/basic-concepts.md
@@ -790,12 +790,13 @@ class Test
 }
 ```
 creates an instance of class `A` and an instance of class `B`. These objects become eligible for garbage collection when the variable `b` is assigned the value `null`, since after this time it is impossible for any user-written code to access them. The output could be either
-```
+
+```console
 Destruct instance of A
 Destruct instance of B
 ```
 or
-```
+```console
 Destruct instance of B
 Destruct instance of A
 ```
@@ -851,7 +852,7 @@ class Test
 ```
 
 In the above program, if the garbage collector chooses to run the destructor of `A` before the destructor of `B`, then the output of this program might be:
-```
+```console
 Destruct instance of A
 Destruct instance of B
 A.F
diff --git a/spec/classes.md b/spec/classes.md
index 3025142..e51cb73 100644
--- a/spec/classes.md
+++ b/spec/classes.md
@@ -1212,7 +1212,7 @@ class Test
 }
 ```
 a class `A` defines a read-only property `P`, thus reserving signatures for `get_P` and `set_P` methods. A class `B` derives from `A` and hides both of these reserved signatures. The example produces the output:
-```
+```console
 123
 123
 456
@@ -1528,7 +1528,7 @@ class Test
 }
 ```
 produces the output:
-```
+```console
 result = 143
 ```
 
@@ -1552,7 +1552,7 @@ class Test
 }
 ```
 produces the output
-```
+```console
 b = False, i = 0
 ```
 because `b` and `i` are both automatically initialized to default values.
@@ -1578,7 +1578,7 @@ class Test
 }
 ```
 produces the output
-```
+```console
 x = 1.4142135623731, i = 100, s = Hello
 ```
 because an assignment to `x` occurs when static field initializers execute and assignments to `i` and `s` occur when the instance field initializers execute.
@@ -1600,7 +1600,7 @@ class Test
 }
 ```
 exhibits this behavior. Despite the circular definitions of a and b, the program is valid. It results in the output
-```
+```console
 a = 1, b = 2
 ```
 because the static fields `a` and `b` are initialized to `0` (the default value for `int`) before their initializers are executed. When the initializer for `a` runs, the value of `b` is zero, and so `a` is initialized to `1`. When the initializer for `b` runs, the value of `a` is already `1`, and so `b` is initialized to `2`.
@@ -1634,13 +1634,13 @@ class B
 }
 ```
 might produce either the output:
-```
+```console
 Init A
 Init B
 1 1
 ```
 or the output:
-```
+```console
 Init B
 Init A
 1 1
@@ -1676,7 +1676,7 @@ class B
 }
 ```
 the output must be:
-```
+```console
 Init B
 Init A
 1 1
@@ -1906,7 +1906,7 @@ class Test
 }
 ```
 produces the output
-```
+```console
 i = 2, j = 1
 ```
 
@@ -1970,7 +1970,7 @@ class Test
 ```
 
 The example produces the output:
-```
+```console
 c:\Windows\System\
 hello.txt
 ```
@@ -2010,7 +2010,7 @@ class Test
 }
 ```
 produces the output
-```
+```console
 Array contains 3 elements: 1 2 3
 Array contains 4 elements: 10 20 30 40
 Array contains 0 elements:
@@ -2052,7 +2052,7 @@ class Test
 }
 ```
 produces the output
-```
+```console
 F();
 F(object[]);
 F(object,object);
@@ -2089,7 +2089,7 @@ class Test
 }
 ```
 produces the output
-```
+```console
 System.Int32 System.String System.Double
 System.Object[]
 System.Object[]
@@ -2160,7 +2160,7 @@ class Test
 ```
 
 In the example, `A` introduces a non-virtual method `F` and a virtual method `G`. The class `B` introduces a new non-virtual method `F`, thus hiding the inherited `F`, and also overrides the inherited method `G`. The example produces the output:
-```
+```console
 A.F
 B.F
 B.G
@@ -2208,7 +2208,7 @@ class Test
 }
 ```
 the `C` and `D` classes contain two virtual methods with the same signature: The one introduced by `A` and the one introduced by `C`. The method introduced by `C` hides the method inherited from `A`. Thus, the override declaration in `D` overrides the method introduced by `C`, and it is not possible for `D` to override the method introduced by `A`. The example produces the output:
-```
+```console
 B.F
 B.F
 D.F
@@ -3850,7 +3850,7 @@ class B: A
 }
 ```
 when `new B()` is used to create an instance of `B`, the following output is produced:
-```
+```console
 x = 1, y = 0
 ```
 
@@ -4076,7 +4076,7 @@ class B
 }
 ```
 must produce the output:
-```
+```console
 Init A
 A.F
 Init B
@@ -4111,7 +4111,7 @@ class B
 }
 ```
 produces the output
-```
+```console
 X = 1, Y = 2
 ```
 
diff --git a/spec/delegates.md b/spec/delegates.md
index 841ff42..39c6240 100644
--- a/spec/delegates.md
+++ b/spec/delegates.md
@@ -236,7 +236,7 @@ Immediately prior to the execution of the final statement, `cd3 -= cd1;`, the de
 
 The output produced is:
 
-```
+```console
 C.M1: -1
 C.M2: -2
 C.M1: 10
diff --git a/spec/documentation-comments.md b/spec/documentation-comments.md
index 650177e..c8cf468 100755
--- a/spec/documentation-comments.md
+++ b/spec/documentation-comments.md
@@ -178,7 +178,7 @@ This tag allows including information from an XML document that is external to t
 
 __Syntax:__
 
-```
+```xml
 <include file="filename" path="xpath" />
 ```
 
diff --git a/spec/enums.md b/spec/enums.md
index 4917afa..3eebb4a 100644
--- a/spec/enums.md
+++ b/spec/enums.md
@@ -154,7 +154,7 @@ class Test
 
 prints out the enum member names and their associated values. The output is:
 
-```
+```console
 Red = 0
 Green = 10
 Blue = 11
diff --git a/spec/expressions.md b/spec/expressions.md
index 0fa8fff..5fa1bd4 100644
--- a/spec/expressions.md
+++ b/spec/expressions.md
@@ -479,7 +479,7 @@ class Test
 }
 ```
 produces the output
-```
+```console
 x = 0, y = 1, z = 2
 x = 4, y = -1, z = 3
 ```
@@ -1201,7 +1201,7 @@ class A
 #### Grammar ambiguities
 
 The productions for *simple_name* ([Simple names](expressions.md#simple-names)) and *member_access* ([Member access](expressions.md#member-access)) can give rise to ambiguities in the grammar for expressions. For example, the statement:
-```
+```csharp
 F(G<A,B>(7));
 ```
 could be interpreted as a call to `F` with two arguments, `G < A` and `B > (7)`. Alternatively, it could be interpreted as a call to `F` with one argument, which is a call to a generic method `G` with two type arguments and one regular argument.
@@ -1402,7 +1402,7 @@ namespace N2
 ```
 
 The output of this example is:
-```
+```console
 E.F(1)
 D.G(2)
 C.H(3)
@@ -2135,7 +2135,7 @@ class Test
 }
 ```
 produces the following output:
-```
+```console
 System.Int32
 System.Int32
 System.String
@@ -3183,7 +3183,7 @@ The operators compare the operands according to the rules of the IEEE 754 standa
 *  If either operand is NaN, the result is `false` for all operators except `!=`, for which the result is `true`. For any two operands, `x != y` always produces the same result as `!(x == y)`. However, when one or both operands are NaN, the `<`, `>`, `<=`, and `>=` operators do not produce the same results as the logical negation of the opposite operator. For example, if either of `x` and `y` is NaN, then `x < y` is `false`, but `!(x >= y)` is `true`.
 *  When neither operand is NaN, the operators compare the values of the two floating-point operands with respect to the ordering
 
-   ```
+   ```csharp
    -inf < -max < ... < -min < -0.0 == +0.0 < +min < ... < +max < +inf
    ```
 
@@ -3286,7 +3286,7 @@ class Test
 }
 ```
 produces the output
-```
+```console
 True
 False
 False
@@ -3830,7 +3830,7 @@ class Test
 }
 ```
 the local variable `x` is captured by the anonymous function, and the lifetime of `x` is extended at least until the delegate returned from `F` becomes eligible for garbage collection (which doesn't happen until the very end of the program). Since each invocation of the anonymous function operates on the same instance of `x`, the output of the example is:
-```
+```console
 1
 2
 3
@@ -3889,7 +3889,7 @@ class Test
 }
 ```
 produces the output:
-```
+```console
 1
 3
 5
@@ -3908,7 +3908,7 @@ static D[] F() {
 }
 ```
 the output is:
-```
+```console
 5
 5
 5
@@ -3926,7 +3926,7 @@ static D[] F() {
 }
 ```
 only one instance of the iteration variable is captured, which produces the output:
-```
+```console
 3
 3
 3
@@ -3945,7 +3945,7 @@ static D[] F() {
 }
 ```
 the three delegates capture the same instance of `x` but separate instances of `y`, and the output is:
-```
+```console
 1 1
 2 1
 3 1
@@ -3973,7 +3973,7 @@ class Test
 }
 ```
 the two anonymous functions capture the same instance of the local variable `x`, and they can thus "communicate" through that variable. The output of the example is:
-```
+```console
 5
 10
 ```
@@ -4131,11 +4131,11 @@ from x in ( e ) . Cast < T > ( )
 ```
 
 A `join` clause that explicitly specifies a range variable type
-```
+```csharp
 join T x in e on k1 equals k2
 ```
 is translated into
-```
+```csharp
 join x in ( e ) . Cast < T > ( ) on k1 equals k2
 ```
 
diff --git a/spec/introduction.md b/spec/introduction.md
index fedf2a1..95e35ac 100644
--- a/spec/introduction.md
+++ b/spec/introduction.md
@@ -28,11 +28,11 @@ class Hello
 ```
 
 C# source files typically have the file extension `.cs`. Assuming that the "Hello, World" program is stored in the file `hello.cs`, the program can be compiled with the Microsoft C# compiler using the command line
-```
+```console
 csc hello.cs
 ```
 which produces an executable assembly named `hello.exe`. The output produced by this application when it is run is
-```
+```console
 Hello, World
 ```
 
@@ -83,7 +83,7 @@ namespace Acme.Collections
 ```
 declares a class named `Stack` in a namespace called `Acme.Collections`. The fully qualified name of this class is `Acme.Collections.Stack`. The class contains several members: a field named `top`, two methods named `Push` and `Pop`, and a nested class named `Entry`. The `Entry` class further contains three members: a field named `next`, a field named `data`, and a constructor. Assuming that the source code of the example is stored in the file `acme.cs`, the command line
 
-```
+```console
 csc /t:library acme.cs
 ```
 compiles the example as a library (code without a `Main` entry point) and produces an assembly named `acme.dll`.
@@ -111,12 +111,12 @@ class Test
 ```
 If the program is stored in the file `test.cs`, when `test.cs` is compiled, the `acme.dll` assembly can be referenced using the compiler's `/r` option:
 
-```
+```console
 csc /r:acme.dll test.cs
 ```
 This creates an executable assembly named `test.exe`, which, when run, produces the output:
 
-```
+```console
 100
 10
 1
diff --git a/spec/lexical-structure.md b/spec/lexical-structure.md
index 7ac8f71..2152bee 100644
--- a/spec/lexical-structure.md
+++ b/spec/lexical-structure.md
@@ -1107,7 +1107,7 @@ class Hello
 }
 ```
 results in the output:
-```
+```console
 hello,
 #if Debug
         world
diff --git a/spec/statements.md b/spec/statements.md
index f6a3a3f..82452e3 100644
--- a/spec/statements.md
+++ b/spec/statements.md
@@ -823,7 +823,7 @@ class Test
 }
 ```
 The output produced is as follows:
-```csharp
+```console
 1.2 2.3 3.4 4.5 5.6 6.7 7.8 8.9
 ```
 
@@ -882,7 +882,7 @@ class Test
 the `finally` blocks associated with two `try` statements are executed before control is transferred to the target of the jump statement.
 
 The output produced is as follows:
-```
+```console
 Before break
 Innermost finally block
 Outermost finally block
@@ -1130,13 +1130,13 @@ class Test
 }
 ```
 the method `F` catches an exception, writes some diagnostic information to the console, alters the exception variable, and re-throws the exception. The exception that is re-thrown is the original exception, so the output produced is:
-```
+```console
 Exception in F: G
 Exception in Main: G
 ```
 
 If the first catch block had thrown `e` instead of rethrowing the current exception, the output produced would be as follows:
-```
+```console
 Exception in F: G
 Exception in Main: F
 ```
diff --git a/spec/structs.md b/spec/structs.md
index 004db4f..eaa45c0 100644
--- a/spec/structs.md
+++ b/spec/structs.md
@@ -229,7 +229,7 @@ class Program
 ```
 
 The output of the program is:
-```
+```console
 1
 2
 3
@@ -278,7 +278,7 @@ class Program
 ```
 
 The first call to `Increment` modifies the value in the variable `x`. This is not equivalent to the second call to `Increment`, which modifies the value in a boxed copy of `x`. Thus, the output of the program is:
-```
+```console
 0
 1
 1
diff --git a/spec/unsafe-code.md b/spec/unsafe-code.md
index 235ebb2..7431285 100644
--- a/spec/unsafe-code.md
+++ b/spec/unsafe-code.md
@@ -619,7 +619,7 @@ class Test
 
 which produces the output:
 
-```
+```console
 p - q = -14
 q - p = 14
 ```
@@ -795,7 +795,7 @@ class Test
 
 which produces the output:
 
-```
+```console
 [0,0,0] =  0 [0,0,1] =  1 [0,0,2] =  2 [0,0,3] =  3
 [0,1,0] =  4 [0,1,1] =  5 [0,1,2] =  6 [0,1,3] =  7
 [0,2,0] =  8 [0,2,1] =  9 [0,2,2] = 10 [0,2,3] = 11