change cursor chain const names to be more specific

Author: lindseymoore

source/crud/query/project.txt

@@ -64,8 +64,8 @@ field of each document:
    :emphasize-lines: 2
 
    // return only* the name field
-   const projection = { name: 1 };
-   const cursor = myColl.find().project(projection);
+   const projectFields = { name: 1 };
+   const cursor = myColl.find().project(projectFields);
    for await (const doc of cursor) {
      console.dir(doc);
    }
@@ -101,8 +101,8 @@ returned documents.
    :emphasize-lines: 2
 
    // return only the name field
-   const projection = { _id: 0, name: 1 };
-   const cursor = myColl.find().project(projection);
+   const projectFields = { _id: 0, name: 1 };
+   const cursor = myColl.find().project(projectFields);
    for await (const doc of cursor) {
      console.dir(doc);
    }
@@ -130,8 +130,8 @@ order in which they are returned.
 
 .. code-block:: javascript
 
-   const projection = { _id: 0, rating: 1, name: 1 };
-   const cursor = myColl.find().project(projection);
+   const projectFields = { _id: 0, rating: 1, name: 1 };
+   const cursor = myColl.find().project(projectFields);
    for await (const doc of cursor) {
      console.dir(doc);
    }

source/crud/query/retrieve.txt

@@ -96,9 +96,9 @@ see the :ref:`node-fundamentals-query-document` guide.
 
    .. code-block:: javascript
 
-      const projection = { _id: 0, field1: 1 };
+      const projectFields = { _id: 0, field1: 1 };
 
-      const findResult = await myColl.findOne().project(projection);
+      const findResult = await myColl.findOne().project(projectFields);
 
    For more information about projecting document fields, see the
    :ref:`node-fundamentals-project` guide.

source/crud/query/specify-documents-to-return.txt

@@ -74,8 +74,8 @@ lengths:
    // define an empty query document
    const query = {};
    // sort in descending (-1) order by length
-   const sort = { length: -1 };
-   const cursor = myColl.find(query).sort(sort);
+   const sortFields = { length: -1 };
+   const cursor = myColl.find(query).sort(sortFields);
    for await (const doc of cursor) {
      console.dir(doc);
    }
@@ -106,8 +106,8 @@ add more fields to the sort document:
    // define an empty query document
    const query = {};
    // sort in ascending (1) order by length
-   const sort = { length: 1, author: 1 };
-   const cursor = myColl.find(query).sort(sort);
+   const sortFields = { length: 1, author: 1 };
+   const cursor = myColl.find(query).sort(sortFields);
    for await (const doc of cursor) {
      console.dir(doc);
    }
@@ -152,9 +152,9 @@ This example performs the following actions:
    // define an empty query document
    const query = {};
    // sort in descending (-1) order by length
-   const sort = { length: -1 };
-   const limit = 3;
-   const cursor = myColl.find(query).sort(sort).limit(limit);
+   const sortFields = { length: -1 };
+   const limitNum = 3;
+   const cursor = myColl.find(query).sort(sortFields).limit(limitNum);
    for await (const doc of cursor) {
      console.dir(doc);
    }
@@ -208,9 +208,9 @@ by performing the following actions:
 
    // define an empty query document
    const query = {};
-   const sort = { length: -1 };
-   const skip = 4;
-   const cursor = myColl.find(query).sort(sort).skip(skip);
+   const sortFields = { length: -1 };
+   const skipNum = 4;
+   const cursor = myColl.find(query).sort(sortFields).skip(skipNum);
    for await (const doc of cursor) {
      console.dir(doc);
    }