diff --git a/lib/relations/belongs_to.js b/lib/relations/belongs_to.js
index <HASH>..<HASH> 100644
--- a/lib/relations/belongs_to.js
+++ b/lib/relations/belongs_to.js
@@ -15,8 +15,6 @@ _.str = require('underscore.string');
 /**
  * The belongs to property for models.
  *
- * Documentation forthcoming.
- *
  * For example:
  *
  *     var Article = Model.extend({
@@ -287,7 +285,8 @@ BelongsTo.reopen(/** @lends BelongsTo# */ {
   }),
 
   /**
-   * Documentation forthcoming.
+   * Fetch the related object. If there is no foreign key defined on the
+   * instance, this method will not actually query the database.
    *
    * @since 1.0
    * @protected
@@ -318,7 +317,8 @@ BelongsTo.reopen(/** @lends BelongsTo# */ {
   },
 
   /**
-   * Documentation forthcoming.
+   * Validate fetched objects, ensuring that exactly one object was obtained
+   * when the foreign key is set.
    *
    * @since 1.0
    * @protected
Finished docs for belongs to.