Edits to issues CSV import docs

doc/user/project/issues/csv_import.md

@@ -2,16 +2,30 @@
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/23532) in GitLab 11.7.
 
-Issues can be imported by uploading a CSV file. The file will be processed in the background and a notification email
-will be sent to you once the import is completed.
+Issues can be imported to a project by uploading a CSV file. Supported fields are
+`title` and `description`.
+
+The user uploading the CSV file will be set as the author of the imported issues.
 
 > **Note:** A permission level of `Developer` or higher is required to import issues.
 
+To import issues:
+
+1. Ensure your CSV file meets the [file format](#csv-file-format) requirements.
+1. Navigate to a project's Issues list page.
+1. If existing issues are present, click the import icon at the top right, next to the **Edit issues** button.
+1. For a project without any issues, click the button labeled **Import CSV** in the middle of the page.
+1. Select the file and click the **Import issues** button.
+
+The file is processed in the background and a notification email is sent
+to you once the import is completed.
+
 ## CSV File Format
 
 ### Header row
 
-CSV files must contain a header row with at least two columns: `title` and `description`, in that order.
+CSV files must contain a header row beginning with at least two columns, `title` and `description`, in that order.
+If additional columns are present, they will be ignored.
 
 ### Column separator
 
@@ -33,7 +47,11 @@ a double-quote (`"`) within a quoted field, use two double-quote characters in s
 After the header row, succeeding rows must follow the same column order. The issue title is required while the
 description is optional.
 
-The user uploading the CSV file will be set as the author of the imported issues.
+### File size
+
+The limit depends on the configuration value of Max Attachment Size for the GitLab instance.
+
+For GitLab.com, it is set to 10 MB.
 
 ## Sample Data
 

doc/user/project/issues/index.md

@@ -144,12 +144,12 @@ create various boards per project with [Multiple Issue Boards](https://docs.gitl
 
 ### Import Issues from CSV
 
-From the project-level issues list, you can find the import button near the "Edit issues" button in the upper-right
-side.
+You can import a CSV file containing issue titles and descriptions to create
+a batch of issues simultaneously.
 
-![Import CSV button](img/import_csv_button.png)
+When you navigate to the Issues list page, an import button is displayed.
 
-Learn more about [importing issues from CSV](csv_import.md)
+For further details, see [Importing issues from CSV](csv_import.md)
 
 ### External Issue Tracker
 
@@ -157,14 +157,14 @@ Alternatively to GitLab's built-in Issue Tracker, you can also use an [external
 tracker](../../../integration/external-issue-tracker.md) such as Jira, Redmine,
 or Bugzilla.
 
-### Issue's API
+### Issue API
 
-Read through the [API documentation](../../../api/issues.md).
+See the [API documentation](../../../api/issues.md).
 
 ### Bulk editing issues
 
-Find out about [bulk editing issues](../../project/bulk_editing.md).
+See the [bulk editing issues](../../project/bulk_editing.md) page.
 
 ### Similar issues
 
-Find out about [similar issues](similar_issues.md).
+See the [similar issues](similar_issues.md) page.