Fixed indefinite article

source/administration/monitoring.txt

@@ -574,7 +574,7 @@ run using the :option:`--oplogSize <mongod --oplogSize>` argument to
 the :program:`mongod` command, or preferably the :setting:`oplogSize`
 in the MongoDB configuration file. If you do not specify this on the
 command line before running with the :option:`--replSet <mongod --replSet>`
-option, :program:`mongod` will create an default sized oplog.
+option, :program:`mongod` will create a default sized oplog.
 
 By default the oplog is 5% of total available disk space on 64-bit
 systems.

source/core/gridfs.txt

@@ -10,7 +10,7 @@ GridFS
 that exceed the :term:`BSON`\-document :ref:`size limit
 <limit-bson-document-size>` of 16MB.
 
-Instead of storing a file in an single document, GridFS divides a file
+Instead of storing a file in a single document, GridFS divides a file
 into parts, or chunks, [#chunk-disambiguation]_ and stores each of
 those chunks as a separate document. By default GridFS limits chunk
 size to 256k. GridFS uses two collections to store files. One

source/core/sharded-cluster-internals.txt

@@ -314,7 +314,7 @@ field ``{ zipcode: 1, username: 1 }``, then:
    the ``username`` field.
 
    If you drop the last appropriate index for the shard key, recover
-   by recreating a index on just the shard key.
+   by recreating an index on just the shard key.
 
 .. _sharding-hashed-shard-key-internals:
 

source/reference/aggregation/gt.txt

@@ -6,7 +6,7 @@ $gt (aggregation)
 
 .. expression:: $gt
 
-   Takes two values in an array and returns an boolean. The returned
+   Takes two values in an array and returns a boolean. The returned
    value is:
 
    - ``true`` when the first value is *greater than* the second value.

source/reference/aggregation/gte.txt

@@ -6,7 +6,7 @@ $gte (aggregation)
 
 .. expression:: $gte
 
-   Takes two values in an array and returns an boolean. The returned
+   Takes two values in an array and returns a boolean. The returned
    value is:
 
    - ``true`` when the first value is *greater than or equal* to the

source/reference/aggregation/lt.txt

@@ -6,7 +6,7 @@ $lt (aggregation)
 
 .. expression:: $lt
 
-   Takes two values in an array and returns an boolean. The returned
+   Takes two values in an array and returns a boolean. The returned
    value is:
 
    - ``true`` when the first value is *less than* the second value.

source/reference/aggregation/lte.txt

@@ -6,7 +6,7 @@ $lte (aggregation)
 
 .. expression:: $lte
 
-   Takes two values in an array and returns an boolean. The returned
+   Takes two values in an array and returns a boolean. The returned
    value is:
 
    - ``true`` when the first value is *less than or equal to* the

source/reference/aggregation/ne.txt

@@ -6,7 +6,7 @@ $ne (aggregation)
 
 .. expression:: $ne
 
-   Takes two values in an array returns an boolean. The returned value
+   Takes two values in an array returns a boolean. The returned value
    is:
 
    - ``true`` when the values are **not equivalent**.

source/reference/method/cursor.sort.txt

@@ -33,7 +33,7 @@ cursor.sort()
    one (e.g. ``-1``), as above, to sort in descending order or a
    positive value (e.g. ``1``) to sort in ascending order.
 
-   Unless you have a index for the specified key pattern, use
+   Unless you have an index for the specified key pattern, use
    :method:`cursor.sort()` in conjunction with :method:`cursor.limit()` to avoid
    requiring MongoDB to perform a large, in-memory
    sort. :method:`cursor.limit()` increases the speed and reduces the amount

source/reference/method/rs.addArb.txt

@@ -7,7 +7,7 @@ rs.addArb()
 .. method:: rs.addArb(hostname)
 
    :param string host: Specifies a host (and optionally port-number)
-                       for a arbiter member for the replica set.
+                       for an arbiter member for the replica set.
 
    Adds a new :term:`arbiter` to an existing replica set.
 

source/reference/mongodump.txt

@@ -185,7 +185,7 @@ Options
 
    .. note::
 
-      :option:`--oplog` only works against nodes that maintain a
+      :option:`--oplog` only works against nodes that maintain an
       :term:`oplog`. This includes all members of a replica set, as
       well as :term:`master` nodes in master/slave replication
       deployments.

source/reference/operator/orderby.txt

@@ -29,7 +29,7 @@ $orderby
    ``-1``, as above) to sort in descending order or a positive value
    (e.g. ``1``) to sort in ascending order.
 
-   Unless you have a index for the specified key pattern, use
+   Unless you have an index for the specified key pattern, use
    :operator:`$orderby` in conjunction with :operator:`$maxScan` and/or
    :method:`cursor.limit()` to avoid requiring MongoDB to perform a
    large in-memory sort. The :method:`cursor.limit()` increases the

source/tutorial/configure-replica-set-tag-sets.txt

@@ -241,7 +241,7 @@ following: [#read-and-write-tags]_
    {"dc.gto": "rack2", disk:"raid"}
    {"dc.va": "rack1", disk:"ssd", ssd: "installed" }
 
-To target a read operation to a member of the replica set with an
+To target a read operation to a member of the replica set with a
 disk type of ``ssd``, you could use the following tag set:
 
 .. code-block:: javascript

source/tutorial/write-a-tumblelog-application-with-django-mongodb-engine.txt

@@ -55,7 +55,7 @@ recommended. Issue the following commands at the system prompt:
    virtualenv myproject
 
 Respectively, these commands: install the ``virtualenv`` program
-(using ``pip``) and create a isolated python environment for this
+(using ``pip``) and create an isolated python environment for this
 project (named ``myproject``.)
 
 To activate ``myproject`` environment at the system prompt, use the

source/tutorial/write-a-tumblelog-application-with-flask-mongoengine.txt

@@ -52,7 +52,7 @@ recommended. Issue the following command at the system prompt:
    virtualenv myproject
 
 Respectively, these commands: install the ``virtualenv`` program
-(using ``pip``) and create a isolated python environment for this
+(using ``pip``) and create an isolated python environment for this
 project (named ``myproject``.)
 
 To activate ``myproject`` environment at the system prompt, use the

source/use-cases/inventory-management.txt

@@ -145,7 +145,7 @@ function operation.
 .. admonition:: The system does not trust that the available inventory can satisfy a request
 
    First this operation checks to make sure that the cart is
-   "active" before adding a item. Then, it verifies that the available
+   "active" before adding an item. Then, it verifies that the available
    inventory to satisfy the request before decrementing inventory.
 
    If there is not adequate inventory, the system removes the cart