diff --git a/doc/AIM.markdown b/doc/AIM.markdown
index 2ae1541..f64b942 100644
--- a/doc/AIM.markdown
+++ b/doc/AIM.markdown
@@ -12,32 +12,45 @@ to the results of the transaction.
 
 Including the SDK
 -----------------
-
+```
 require_once 'anet_php_sdk/AuthorizeNet.php'; 
+```
 
 Setting Merchant Credentials
 ----------------------------
 The easiest way to set credentials is to define constants which the SDK uses:
+
+```
 define("AUTHORIZENET_API_LOGIN_ID", "YOURLOGIN");
 define("AUTHORIZENET_TRANSACTION_KEY", "YOURKEY");
+```
 
 You can also set credentials manually per request like so:
 
+```
 $sale = new AuthorizeNetAIM("YOUR_API_LOGIN_ID","YOUR_TRANSACTION_KEY");
-
+```
 
 Setting the Transaction Post Location
 -------------------------------------
 
 To post transactions to the live Authorize.Net gateway:
+
+```
 define("AUTHORIZENET_SANDBOX", false);
+```
 
 To post transactions to the Authorize.Net test server:
+
+```
 define("AUTHORIZENET_SANDBOX", true);
+```
 
 You can also set the location manually per request:
-$sale->setSandbox(false);
 
+```
+$sale->setSandbox(false);
+```
 
 Setting Fields
 --------------
@@ -47,17 +60,22 @@ allows you to set these fields in a few different ways depending on your
 preference.
 
 Note: to make things easier on the developer, the "x_" prefix attached to each
-field in the AIM API has been removed. Thus, instead of setting $sale->x_card_num,
-set $sale->card_num instead.
+field in the AIM API has been removed. Thus, instead of setting `$sale->x_card_num`,
+set `$sale->card_num` instead.
 
 1.) By Setting Fields Directly:
+
+```
 $sale = new AuthorizeNetAIM;
 $sale->amount = "1999.99";
 $sale->card_num = '6011000000000012';
 $sale->exp_date = '04/15';
 $response = $sale->authorizeAndCapture();
+```
 
 2.) By Setting Multiple Fields at Once:
+
+```
 $sale = new AuthorizeNetAIM;
 $sale->setFields(
     array(
@@ -66,12 +84,15 @@ $sale->setFields(
     'exp_date' => '0415'
     )
 );
+```
 
 3.) By Setting Special Items
 
 To add line items or set custom fields use the respective functions:
 
 Line Items:
+
+```
 $sale->addLineItem(
   'item1', // Item Id
   'Golf tees', // Item Name
@@ -80,14 +101,18 @@ $sale->addLineItem(
   '5.00', // Item Unit Price
   'N' // Item taxable
   );
+```
 
 Custom Fields:
+
+```
 $sale->setCustomField("coupon_code", "SAVE2011");
+```
 
 4.) By Passing in Objects
-
 Each property will be copied from the object to the AIM request.
 
+```
 $sale = new AuthorizeNetAIM;
 $customer = (object)array();
 $customer->first_name = "Jane";
@@ -104,17 +129,20 @@ $customer->email = "foo@example.com";
 $customer->cust_id = "55";
 $customer->customer_ip = "98.5.5.5";
 $sale->setFields($customer);
+```
 
 Submitting Transactions
 -----------------------
 To submit a transaction call one of the 7 methods: 
 
+```
 -authorizeAndCapture()
 -authorizeOnly()
 -priorAuthCapture()
 -void()
 -captureOnly()
 -credit()
+```
 
 Each method has optional parameters which highlight the fields required by the
 Authorize.Net API for that transaction type.
@@ -125,6 +153,7 @@ eCheck
 To submit an electronic check transaction you can set the required fields individually
 or simply use the setECheck method:
 
+```
 $sale = new AuthorizeNetAIM;
 $sale->amount = "45.00";
 $sale->setECheck(
@@ -136,6 +165,7 @@ $sale->setECheck(
   'WEB' // echeck_type
 );
 $response  = $sale->authorizeAndCapture();
+```
 
 
 Partial Authorization Transactions
@@ -143,18 +173,22 @@ Partial Authorization Transactions
 To enable partial authorization transactions set the partial_auth flag
 to true:
 
+```
 $sale->allow_partial_auth = true;
+```
 
 You should receive a split tender id in the response if a partial auth
 is made:
 
+```
 $split_tender_id = $response->split_tender_id;
-
+```
 
 Itemized Order Information
 --------------------------
 To add itemized order information use the addLineItem method:
 
+```
 $auth->addLineItem(
   'item1', // Item Id
   'Golf tees', // Item Name
@@ -163,15 +197,16 @@ $auth->addLineItem(
   '5.00', // Item Unit Price
   'N' // Item taxable
   );
-
+```
 
 Merchant Defined Fields
 -----------------------
 You can use the setCustomField method to set any custom merchant defined field(s):
 
+```
 $sale->setCustomField("entrance_source", "Search Engine");
 $sale->setCustomField("coupon_code", "SAVE2011");
-
+```
 
 Transaction Response
 --------------------
@@ -179,9 +214,10 @@ When you submit an AIM transaction you receive an AuthorizeNetAIM_Response
 object in return. You can access each name/value pair in the response as
 you would normally expect:
 
+```
 $response = $sale->authorizeAndCapture();
 $response->response_code;
 $response->response_subcode;
 $response->response_reason_code;
 $response->transaction_id;
-
+```
\ No newline at end of file
diff --git a/doc/ARB.markdown b/doc/ARB.markdown
index 1d4bb92..39073b9 100644
--- a/doc/ARB.markdown
+++ b/doc/ARB.markdown
@@ -7,12 +7,11 @@ Basic Overview
 The AuthorizeNetARB class creates a request object for submitting transactions
 to the AuthorizeNetARB API.
 
-
 Creating/Updating Subscriptions
 -------------------------------
-
 To create or update a subscription first create a subscription object:
 
+```
 $subscription = new AuthorizeNet_Subscription;
 $subscription->name = "Short subscription";
 $subscription->intervalLength = "1";
@@ -25,16 +24,21 @@ $subscription->creditCardExpirationDate = "2018-10";
 $subscription->creditCardCardCode = "123";
 $subscription->billToFirstName = "john";
 $subscription->billToLastName = "doe";
+```
 
 Then create an AuthorizeNetARB object and call the appropriate method
 passing in your subscription object:
 
+```
 $request = new AuthorizeNetARB;
 $response = $request->createSubscription($subscription);
+```
 
-   or for updating a subscription:
+or for updating a subscription:
    
+```
 $response = $request->updateSubscription($subscription_id, $subscription);
+```
 
 Getting Subscription Status
 ---------------------------
@@ -42,11 +46,15 @@ Getting Subscription Status
 Create a new AuthorizeNetARB object and call the getSubscriptionStatus
 method with the subscription_id you want the status of as the parameter:
 
+```
 $status_request = new AuthorizeNetARB;
 $status_response = $status_request->getSubscriptionStatus($subscription_id);
+```
 
 Canceling a Subscription
 ------------------------
 
+```
 $cancellation = new AuthorizeNetARB;
 $cancel_response = $cancellation->cancelSubscription($subscription_id);
+```
\ No newline at end of file
diff --git a/doc/CIM.markdown b/doc/CIM.markdown
index bbe8a3b..82aca6e 100644
--- a/doc/CIM.markdown
+++ b/doc/CIM.markdown
@@ -14,14 +14,17 @@ Creating a Customer Profile
 To create a new cusomter profile, first create a new AuthorizeNetCustomer
 object.
 
+```
 $customerProfile = new AuthorizeNetCustomer;
 $customerProfile->description = "Description of customer";
 $customerProfile->merchantCustomerId = 123;
 $customerProfile->email = "user@domain.com";
+```
 
 You can then create an add payment profiles and addresses to this
 customer object.
 
+```
 // Add payment profile.
 $paymentProfile = new AuthorizeNetPaymentProfile;
 $paymentProfile->customerType = "individual";
@@ -67,52 +70,66 @@ $address2->country = "USA";
 $address2->phoneNumber = "555-512-5555";
 $address2->faxNumber = "555-523-5556";
 $customerProfile->shipToList[] = $address2;
+```
 
 
 Next, create an AuthorizeNetCIM object:
 
+```
 $request = new AuthorizeNetCIM;
+```
 
 Finally, call the createCustomerProfile method and pass in your
 customer object:
 
+```
 $response = $request->createCustomerProfile($customerProfile);
+```
 
 The response object provides some helper methods for easy access to the
 results of the transaction:
 
+```
 $new_customer_id = $response->getCustomerProfileId();
+```
 
 The response object also stores the XML response as a SimpleXml element
 which you can access like so:
 
+```
 $new_customer_id = $response->xml->customerProfileId
+```
   
 You can also run xpath queries against the result:
 
+```
 $array = $response->xpath('customerProfileId');
 $new_customer_id = $array[0];
-
+```
 
 Deleting a Customer Profile
 ---------------------------
 
 To delete a customer profile first create a new AuthorizeNetCIM object:
 
+```
 $request = new AuthorizeNetCIM;
+```
 
 Then call the deleteCustomerProfile method:
 
+```
 request->deleteCustomerProfile($customer_id);
-
+```
 
 Retrieving a Customer Profile
 -----------------------------
 
 To retrieve a customer profile call the getCustomerProfile method:
 
+```
 $response = $request->getCustomerProfile($customerProfileId);
-
+```
 
 Validation Mode
 ---------------
@@ -122,16 +139,19 @@ Validation mode allows you to generate a test transaction at the time you create
 To create a customer profile with Validation mode, simply pass in the
 a value for the validation mode parameter on the createCustomerProfile method:
 
+```
 $response = $request->createCustomerProfile($customerProfile, "testMode");
+```
 
 You can access the validation response for each payment profile via xpath,
 the SimpleXML element or the getValidationResponses method:
 
+```
 $validationResponses = $response->getValidationResponses();
   foreach ($validationResponses as $vr) {
     echo $vr->approved;
 }
-
+```
 
 Updating a Customer Profile
 ---------------------------
@@ -139,32 +159,34 @@ Updating a Customer Profile
 Call the updateCustomerProfile method with the customerProfileId and customerProfile
 parameters:
 
+```
 $response = $request->updateCustomerProfile($customerProfileId, $customerProfile);
-
+```
 
 Adding a Payment Profile
 ------------------------
 
-
+```
 $paymentProfile = new AuthorizeNetPaymentProfile;
 $paymentProfile->customerType = "individual";
 $paymentProfile->payment->creditCard->cardNumber = "4111111111111111";
 $paymentProfile->payment->creditCard->expirationDate = "2015-10";
 $response = $request->createCustomerPaymentProfile($customerProfileId, $paymentProfile);
-
+```
 
 Updating a Payment Profile
 --------------------------
 
+```
 $paymentProfile->payment->creditCard->cardNumber = "4111111111111111";
 $paymentProfile->payment->creditCard->expirationDate = "2017-11";
 $response = $request->updateCustomerPaymentProfile($customerProfileId,$paymentProfileId, $paymentProfile);
+```
 
 Adding a Shipping Address
 -------------------------
 
-
-
+```
 $address = new AuthorizeNetAddress;
 $address->firstName = "john";
 $address->lastName = "Doe";
@@ -178,18 +200,21 @@ $address->phoneNumber = "555-555-5555";
 $address->faxNumber = "555-555-5556";
 $response = $request->createCustomerShippingAddress($customerProfileId, $address);
 $customerAddressId = $response->getCustomerAddressId();
+```
 
 Updating a Shipping Address
 ---------------------------
 
+```
 // Update shipping address.
 $address->address = "2 First Street";
 $response = $request->updateCustomerShippingAddress($customerProfileId, $customerAddressId, $address);
-
+```
 
 Creating Transactions
 ---------------------
     
+```
 // Create Auth & Capture Transaction
 $transaction = new AuthorizeNetTransaction;
 $transaction->amount = "9.79";
@@ -215,35 +240,39 @@ $lineItem2->taxable    = "true";
 
 $transaction->lineItems[] = $lineItem;
 $transaction->lineItems[] = $lineItem2;
-    
-    
+        
 $response = $request->createCustomerProfileTransaction("AuthCapture", $transaction);
 $transactionResponse = $response->getTransactionResponse();
 $transactionId = $transactionResponse->transaction_id;
-    
+```
     
 Voiding a Transaction
 ---------------------
 
+```
 $transaction = new AuthorizeNetTransaction;
 $transaction->transId = $transactionId;
 $response = $request->createCustomerProfileTransaction("Void", $transaction);
-
+```
 
 Deleting a Shipping Address
 ---------------------------
 
+```
 $response = $request->deleteCustomerShippingAddress($customerProfileId, $customerAddressId);
+```
 
 
 Deleting a Payment Profile
 --------------------------
 
+```
 $response = $request->deleteCustomerPaymentProfile($customerProfileId, $paymentProfileId);
+```
   
-
-
 Getting Customer Profile IDs
 ----------------------------
 
-$response = $request->getCustomerProfileIds();
\ No newline at end of file
+```
+$response = $request->getCustomerProfileIds();
+```
\ No newline at end of file
diff --git a/doc/CP.markdown b/doc/CP.markdown
index 96ea161..a296646 100644
--- a/doc/CP.markdown
+++ b/doc/CP.markdown
@@ -21,6 +21,7 @@ Setting Track Data
 
 To set Track 1 and/or Track 2 data, use the respective methods like so:
 
+```
 $sale = new AuthorizeNetCP(CP_API_LOGIN_ID, CP_TRANSACTION_KEY);
 $sale->setFields(
     array(
@@ -40,4 +41,4 @@ $sale->setFields(
 );
 $sale->setTrack2Data('4111111111111111=1803101000020000831?');
 $response = $sale->authorizeAndCapture();
-
+```
\ No newline at end of file
diff --git a/doc/DPM.markdown b/doc/DPM.markdown
index 115cc9d..19797ed 100644
--- a/doc/DPM.markdown
+++ b/doc/DPM.markdown
@@ -10,13 +10,13 @@ of implementing the Direct Post Method.
 While it is not necessary to use the AuthorizeNetDPM class to implement
 DPM, it may serve as a handy reference.
 
-The AuthorizeNetDPM class extends the AuthorizeNetSIM_Form class.
-See the SIM.markdown for additional documentation.
+The `AuthorizeNetDPM` class extends the `AuthorizeNetSIM_Form` class.
+See the [SIM.markdown](SIM.markdown) for additional documentation.
 
 Relay Response Snippet
 ----------------------
 
-The AuthorizeNetDPM class contains a getRelayResponseSnippet($redirect_url)
+The AuthorizeNetDPM class contains a `getRelayResponseSnippet($redirect_url)`
 which generates a snippet of HTML that will redirect a user back to your
 site after submitting a checkout form using DPM/SIM.
 
diff --git a/doc/SIM.markdown b/doc/SIM.markdown
index ee38e59..e5cc3a4 100644
--- a/doc/SIM.markdown
+++ b/doc/SIM.markdown
@@ -7,7 +7,6 @@ Basic Overview
 The Authorize.Net PHP SDK includes classes that can speed up implementing
 a Server Integration Method solution.
 
-
 Hosted Order/Receipt Page
 -------------------------
 
@@ -18,6 +17,7 @@ reference.
 
 The code below will generate a buy now button that leads to a hosted order page:
 
+```
 <form method="post" action="https://test.authorize.net/gateway/transact.dll">
 <?php
 $amount = "9.99";
@@ -38,14 +38,16 @@ $sim = new AuthorizeNetSIM_Form(
 echo $sim->getHiddenFieldString();?>
 <input type="submit" value="Buy Now">
 </form>
+```
 
 Fingerprint Generation
 ----------------------
 
 To generate the fingerprint needed for a SIM transaction call the getFingerprint method:
 
+```
 $fingerprint = AuthorizeNetSIM_Form::getFingerprint($api_login_id, $transaction_key, $amount, $fp_sequence, $fp_timestamp);
-
+```
 
 Relay Response
 --------------
@@ -63,6 +65,7 @@ http://yourdomain.com/response_handler.php and execute any logic you want
 when a transaction occurs. The AuthorizeNetSIM class makes it easy to verify
 the transaction came from Authorize.Net and parse the response:
 
+```
 $response = new AuthorizeNetSIM;
 if ($response->isAuthorizeNet())
 {
@@ -72,3 +75,4 @@ if ($response->isAuthorizeNet())
     magazine_subscription_activate($response->cust_id);
   }
 }
+```
\ No newline at end of file
diff --git a/doc/SOAP.markdown b/doc/SOAP.markdown
index a535f00..2f9e72e 100644
--- a/doc/SOAP.markdown
+++ b/doc/SOAP.markdown
@@ -4,7 +4,7 @@ SOAP
 Basic Overview
 --------------
 
-The AuthorizeNetSOAP class provides a very basic wrapper to PHP's bundled
-SoapClient class. The AuthorizeNetSOAP class merely contains the WSDL,
+The `AuthorizeNetSOAP` class provides a very basic wrapper to PHP's bundled
+`SoapClient` class. The `AuthorizeNetSOAP` class merely contains the WSDL,
 Sandbox, and Live Production server urls to make it easier to connect
 to the Authorize.Net SOAP API.
\ No newline at end of file
diff --git a/doc/TD.markdown b/doc/TD.markdown
index c9a1bfb..c4e5c58 100644
--- a/doc/TD.markdown
+++ b/doc/TD.markdown
@@ -4,52 +4,64 @@ Transaction Details API
 Basic Overview
 --------------
 
-The AuthorizeNetTD class creates a request object for submitting requests
+The `AuthorizeNetTD` class creates a request object for submitting requests
 to the Authorize.Net Transaction Details API.
 
-The AuthorizeNetTD class returns a response that uses PHP's bundled SimpleXML
+The `AuthorizeNetTD` class returns a response that uses PHP's bundled `SimpleXML`
 class for accessing it's members.
 
 The AuthorizeNetTD response provides two ways to access response elements:
 
 1.) A SimpleXml object:
 
+```
 $response->xml->transaction->payment->creditCard->cardType
+```
 
 2.) Xpath:
 
+```
 $batches = $response->xpath("batchList/batch");
+```
 
 3.) AuthorizeNet Objects (todo)
 
-
-
 Get Transaction Details
 -----------------------
 
+```
 $request = new AuthorizeNetTD;
 $response = $request->getTransactionDetails($transId);
 echo "Amount: {$response->xml->transaction->authAmount}";
+```
 
 Get Settled Batch List
 ----------------------
+
+```
 $request = new AuthorizeNetTD;
 $response = $request->getSettledBatchList();
 $batches = $response->xpath("batchList/batch");
 echo "Batch 1: {$batches[0]->batchId}";
+```
 
 Get Transaction List
 --------------------
+
+```
 $request = new AuthorizeNetTD;
 $response = $request->getTransactionList($batch_id);
 $transactions = $response->xpath("transactions/transaction")
+```
 
 There are two additional helper methods in the PHP SDK which
 will make multiple calls to retrieve a day's worth of 
 transactions or a month's worth of batches:
 
+```
 getTransactionsForDay($month, $day, $year = false)
 getSettledBatchListForMonth($month , $year)
+```
 
 If you don't pass parameters into these methods they will default
-to the current day/month.
+to the current day/month.
\ No newline at end of file