Q:

SwaggerUI: Path shows "Default".  How can I change? 

I downloaded sample server program from http://editor.swagger.io. ( Swagger Petstore (Simple), NodeJS) 
Then I deployed into my server but the path is showed "Default".  How can I change it? 

This sample shows the name of paths.  This is what I want to do it.  http://petstore.swagger.io/#/

package.json
"dependencies": {
  "connect": "^3.2.0",
  "js-yaml": "^3.3.0",
  "swagger-tools": "0.9.*" 
}

=============================
Update 
This may be related.  How to change Swagger-UI "Default" Path
I'm not sure how JSON file is necessary.  I'm using yaml.  I may be choose .json or .yaml. 
And also I'm wondering this is related to my issue..

{
  schemaValidationMessages: [
    {
      level: "error",
      message: "Can't read from file http://xxxxx/api-docs"
    }
  ]
}

A:

The grouping is done by the use of tags.   Just tag each operation with a string array like such:
get:
  tags:
    - Admin Operations
  parameters: []

The description for tags is defined in a top-level tags object:
tags:
  - name: Admin Functions
    description: These are only for special users! 

And this will show the description in the top-level 

