diff --git a/includes/add_datastream.form.inc b/includes/add_datastream.form.inc
index 62490c9a..3a1d964d 100644
--- a/includes/add_datastream.form.inc
+++ b/includes/add_datastream.form.inc
@@ -32,7 +32,7 @@ function islandora_add_datastream_form(array $form, array &$form_state, Abstract
     '#attributes' => array(
       'enctype' => 'multipart/form-data',
     ),
-    'dsid' => array(
+    'dsid_fieldset' => array(
       '#type' => 'fieldset',
       '#title' => 'Add a datastream',
       '#collapsible' => FALSE,
@@ -40,44 +40,44 @@ function islandora_add_datastream_form(array $form, array &$form_state, Abstract
       'dsid' => array(
         '#title' => 'Datastream ID',
         '#description' => t("An ID for this stream that is unique to this object. Must start with a letter and contain only alphanumeric characters, dashes and underscores. The following datastreams are defined by this content model but don't currently exist: <b>@unused_dsids</b>.", array('@unused_dsids' => $unused_datastreams)),
+        '#type' => 'textfield',
+        '#size' => 64,
+        '#maxlength' => 64,
+        '#required' => TRUE,
+        '#element_validate' => array(
+          'islandora_add_datastream_form_field_is_not_an_existing_datastream_id',
+          'islandora_add_datastream_form_field_starts_with_a_letter',
+          'islandora_add_datastream_form_field_is_valid_dsid',
+        ),
+        '#autocomplete_path' => "islandora/object/{$object->id}/manage/datastreams/add/autocomplete",
       ),
-      '#type' => 'textfield',
-      '#size' => 64,
-      '#maxlength' => 64,
-      '#required' => TRUE,
-      '#element_validate' => array(
-        'islandora_add_datastream_form_field_is_not_an_existing_datastream_id',
-        'islandora_add_datastream_form_field_starts_with_a_letter',
-        'islandora_add_datastream_form_field_is_valid_dsid',
+      'label' => array(
+        '#title' => 'Datastream Label',
+        '#required' => TRUE,
+        '#size' => 64,
+        '#maxlength' => 64,
+        '#description' => t('A human-readable label'),
+        '#type' => 'textfield',
+        '#element_validate' => array('islandora_add_datastream_form_field_does_not_contain_a_forward_slash'),
       ),
-      '#autocomplete_path' => "islandora/object/{$object->id}/manage/datastreams/add/autocomplete",
-    ),
-    'label' => array(
-      '#title' => 'Datastream Label',
-      '#required' => TRUE,
-      '#size' => 64,
-      '#maxlength' => 64,
-      '#description' => t('A human-readable label'),
-      '#type' => 'textfield',
-      '#element_validate' => array('islandora_add_datastream_form_field_does_not_contain_a_forward_slash'),
-    ),
-    'file' => array(
-      '#type' => 'managed_file',
-      '#required' => TRUE,
-      '#title' => t('Upload Document'),
-      '#size' => 48,
-      '#description' => t('Select a file to upload.<br/>Files must be less than <b>@size MB.</b>', array('@size' => $upload_size)),
-      '#default_value' => isset($form_state['values']['files']) ? $form_state['values']['files'] : NULL,
-      '#upload_location' => 'temporary://',
-      '#upload_validators' => array(
-        'file_validate_extensions' => array(NULL),
-        // Assume its specified in MB.
-        'file_validate_size' => array($upload_size * 1024 * 1024),
+      'file' => array(
+        '#type' => 'managed_file',
+        '#required' => TRUE,
+        '#title' => t('Upload Document'),
+        '#size' => 48,
+        '#description' => t('Select a file to upload.<br/>Files must be less than <b>@size MB.</b>', array('@size' => $upload_size)),
+        '#default_value' => isset($form_state['values']['files']) ? $form_state['values']['files'] : NULL,
+        '#upload_location' => 'temporary://',
+        '#upload_validators' => array(
+          'file_validate_extensions' => array(NULL),
+          // Assume its specified in MB.
+          'file_validate_size' => array($upload_size * 1024 * 1024),
+        ),
+      ),
+      'submit' => array(
+        '#type' => 'submit',
+        '#value' => t('Add Datastream'),
       ),
-    ),
-    'submit' => array(
-      '#type' => 'submit',
-      '#value' => t('Add Datastream'),
     ),
   );
 }
@@ -148,7 +148,7 @@ function islandora_add_datastream_form_field_does_not_contain_a_forward_slash(ar
 }
 
 /**
- * Checks if the given datastream requires the upload to be a certian MIME type.
+ * Checks if the given datastream requires the upload to be a certain MIME type.
  *
  * @param array $form
  *   The Drupal form.
diff --git a/includes/datastream.inc b/includes/datastream.inc
index 8a02439a..da55dcd5 100644
--- a/includes/datastream.inc
+++ b/includes/datastream.inc
@@ -112,6 +112,9 @@ function islandora_datastream_get_url(AbstractDatastream $datastream, $type = 'd
  *
  * @param AbstractDatastream $datastream
  *   The datastream to generated the url to.
+ *
+ * @return string
+ *   Markup containing the link to the confirm form to delete the datastream.
  */
 function islandora_datastream_get_delete_link(AbstractDatastream $datastream) {
   $message = islandora_deprecated('7.x-1.2', 'Use the "islandora_datastream_delete_link" theme implementation.');
@@ -127,6 +130,9 @@ function islandora_datastream_get_delete_link(AbstractDatastream $datastream) {
  *
  * @param AbstractDatastream $datastream
  *   The datastream to generated the url to.
+ *
+ * @return string
+ *   Markup containing the link to edit the datastream.
  */
 function islandora_datastream_edit_get_link(AbstractDatastream $datastream) {
   $message = islandora_deprecated('7.x-1.2', 'Use the "islandora_datastream_edit_link" theme implementation.');
@@ -169,6 +175,9 @@ function islandora_edit_datastream(AbstractDatastream $datastream) {
  *
  * @param array $edit_registry
  *   A list of 'islandora_edit_datastream_registry' values.
+ *
+ * @return array
+ *   A Drupal renderable array containing the "edit" markup.
  */
 function islandora_edit_datastream_registry_render(array $edit_registry) {
   $markup = '';
diff --git a/includes/datastream.version.inc b/includes/datastream.version.inc
index 2631790f..1e7c0830 100644
--- a/includes/datastream.version.inc
+++ b/includes/datastream.version.inc
@@ -65,6 +65,8 @@ function islandora_datastream_version_table($datastream) {
  *   The Drupal form state.
  * @param AbstractDatastream $datastream
  *   The datastream to be deleted.
+ * @param string $version
+ *   The version number of the datastream we are trying to delete.
  *
  * @return array
  *   The drupal form definition.
diff --git a/includes/ingest.form.inc b/includes/ingest.form.inc
index 6faa642c..7edd0f60 100644
--- a/includes/ingest.form.inc
+++ b/includes/ingest.form.inc
@@ -186,10 +186,10 @@ function islandora_ingest_form_get_step(array &$form_state, $step_id = NULL) {
  *
  * @param array $form_state
  *   The Drupal form state.
- * @param string $step
+ * @param array $step
  *   The step relative to the result, if not provided the current step is used.
  *
- * @return string
+ * @return array|null
  *   The next step if found, NULL otherwise.
  */
 function islandora_ingest_form_get_next_step(array &$form_state, array $step = NULL) {
@@ -205,10 +205,10 @@ function islandora_ingest_form_get_next_step(array &$form_state, array $step = N
  *
  * @param array $form_state
  *   The Drupal form state.
- * @param string $step
+ * @param array $step
  *   The step relative to the result, if not provided the current step is used.
  *
- * @return string
+ * @return array|null
  *   The next step if found, NULL otherwise.
  */
 function islandora_ingest_form_get_previous_step(array &$form_state, array $step = NULL) {
@@ -329,6 +329,9 @@ function islandora_ingest_form_decrement_step(array &$form_state) {
  *   The Drupal form.
  * @param array $form_state
  *   The Drupal form state.
+ * @param string $step_id
+ *   The ID of the step relative to the result, if not provided the current
+ *   step_id is used.
  *
  * @return array
  *   The form definition of the current step.
@@ -363,6 +366,8 @@ function islandora_ingest_form_execute_step(array $form, array &$form_state, $st
  *   The Drupal form.
  * @param array $form_state
  *   The Drupal form state.
+ * @param array $step
+ *   The step we are executing.
  *
  * @return array
  *   The form definition of the given step.
@@ -391,6 +396,8 @@ function islandora_ingest_form_execute_form_step(array $form, array &$form_state
  *   The Drupal form.
  * @param array $form_state
  *   The Drupal form state.
+ * @param array $step
+ *   The step that execution begins from.
  */
 function islandora_ingest_form_execute_consecutive_callback_steps(array $form, array &$form_state, array $step) {
   do {
@@ -409,6 +416,8 @@ function islandora_ingest_form_execute_consecutive_callback_steps(array $form, a
  *   The Drupal form.
  * @param array $form_state
  *   The Drupal form state.
+ * @param array $step
+ *   The step currently being executed.
  */
 function islandora_ingest_form_execute_callback_step(array $form, array &$form_state, array $step) {
   $args = array(&$form_state);
@@ -425,6 +434,8 @@ function islandora_ingest_form_execute_callback_step(array $form, array &$form_s
  *   The Drupal form.
  * @param array $form_state
  *   The Drupal form state.
+ * @param array $step
+ *   The step that execution begins from.
  */
 function islandora_ingest_form_undo_consecutive_callback_steps(array $form, array &$form_state, array $step) {
   do {
@@ -443,6 +454,8 @@ function islandora_ingest_form_undo_consecutive_callback_steps(array $form, arra
  *   The Drupal form.
  * @param array $form_state
  *   The Drupal form state.
+ * @param array $step
+ *   The step which the undo callback is being called on.
  */
 function islandora_ingest_form_undo_callback_step(array $form, array &$form_state, array $step) {
   $args = array(&$form_state);
@@ -457,11 +470,13 @@ function islandora_ingest_form_undo_callback_step(array $form, array &$form_stat
  *   The Drupal form.
  * @param array $form_state
  *   The Drupal form state.
+ * @param array $step
+ *   An array defining a ingest step.
  *
  * @return array
  *   The stepified Drupal form definition for the given step.
  */
-function islandora_ingest_form_stepify(array $form, array &$form_state, $step) {
+function islandora_ingest_form_stepify(array $form, array &$form_state, array $step) {
   $first_form_step = islandora_ingest_form_on_first_form_step($form_state);
   $last_form_step = islandora_ingest_form_on_last_form_step($form_state);
   $form['form_step_id'] = array(
@@ -692,6 +707,8 @@ function islandora_ingest_form_ingest_button(array &$form_state) {
  *
  * Attempts to ingest every object built by the previous steps.
  *
+ * @param array $form
+ *   The Drupal form.
  * @param array $form_state
  *   The Drupal form state.
  */
diff --git a/includes/object.entity_controller.inc b/includes/object.entity_controller.inc
index d3fd6986..9464d7b5 100644
--- a/includes/object.entity_controller.inc
+++ b/includes/object.entity_controller.inc
@@ -24,6 +24,9 @@ class IslandoraObjectEntityController implements DrupalEntityControllerInterface
    *   The ID's of the entities.
    * @param array $conditions
    *   The conditions to apply.
+   *
+   * @return array
+   *   An array of loaded objects.
    */
   public function load($ids = array(), $conditions = array()) {
     if (!empty($conditions)) {
diff --git a/includes/utilities.inc b/includes/utilities.inc
index 5ce2ca14..c8d1ae5e 100644
--- a/includes/utilities.inc
+++ b/includes/utilities.inc
@@ -14,6 +14,8 @@
  *
  * @param int $bytes
  *   Size in bytes to convert
+ * @param int $precision
+ *   The amount of decimal precision to show.
  *
  * @return string
  *   Human readable size.
diff --git a/tests/islandora_ingest_test.module b/tests/islandora_ingest_test.module
index d414c717..8a6771d9 100644
--- a/tests/islandora_ingest_test.module
+++ b/tests/islandora_ingest_test.module
@@ -87,7 +87,11 @@ function islandora_ingest_test_test_testcmodel2_islandora_ingest_steps(array &$f
  *   The Drupal form definition.
  */
 function islandora_ingest_test_set_label_form(array $form, array &$form_state) {
-  $models = array('test:nomorestepscmodel', 'test:testcmodel', 'test:testcmodel2');
+  $models = array(
+    'test:nomorestepscmodel',
+    'test:testcmodel',
+    'test:testcmodel2',
+  );
   $model = isset($form_state['values']['model']) ? $form_state['values']['model'] : reset($models);
   $shared_storage = &islandora_ingest_form_get_shared_storage($form_state);
   $shared_storage['models'] = array($model);
@@ -139,8 +143,7 @@ function islandora_ingest_test_set_label_form_submit(array $form, array &$form_s
  * Test the First content model.
  */
 function islandora_ingest_test_testcmodel_form(array $form, array &$form_state) {
-  return array(
-  );
+  return array();
 }
 
 /**
@@ -154,8 +157,7 @@ function islandora_ingest_test_testcmodel_form_submit(array $form, array &$form_
  * Test the second content model.
  */
 function islandora_ingest_test_testcmodel2_form(array $form, array &$form_state) {
-  return array(
-  );
+  return array();
 }
 
 /**
diff --git a/theme/theme.inc b/theme/theme.inc
index 85341838..d988ee77 100644
--- a/theme/theme.inc
+++ b/theme/theme.inc
@@ -251,6 +251,9 @@ function islandora_preprocess_islandora_objects(array &$variables) {
  * @param array $vars
  *   An array containing:
  *   - datastream: An AbstractDatastream for which to generate a download link.
+ *
+ * @return string
+ *   Markup containing the download url if the user has access, empty otherwise.
  */
 function theme_islandora_datastream_download_link(array $vars) {
   $datastream = $vars['datastream'];
@@ -270,6 +273,9 @@ function theme_islandora_datastream_download_link(array $vars) {
  *   - datastream: An AbstractDatastream for which to generate a view link.
  *   - label: (Optional) The label for the link.
  *   - version: (Optional) The version of the datstream to link to.
+ *
+ * @return string
+ *   Markup containing the link to the datastream or the label if inaccessible.
  */
 function theme_islandora_datastream_view_link(array $vars) {
   $datastream = $vars['datastream'];
@@ -304,6 +310,9 @@ function theme_islandora_datastream_view_link(array $vars) {
  *   An array containing:
  *   - datastream: An AbstractDatastream for which to generate a delete link.
  *   - version: (optional) the version of the datastream to delete.
+ *
+ * @return string
+ *   Markup containing the url to delete a datastream, or empty if inaccessible.
  */
 function theme_islandora_datastream_delete_link(array $vars) {
   $datastream = $vars['datastream'];
@@ -336,6 +345,9 @@ function theme_islandora_datastream_delete_link(array $vars) {
  * @param array $vars
  *   An array containing:
  *   - datastream: An AbstractDatastream for which to generate a edit link.
+ *
+ * @return string
+ *   Markup containing the url to edit a datastream, or empty if inaccessible.
  */
 function theme_islandora_datastream_edit_link(array $vars) {
   $datastream = $vars['datastream'];