# HTML Views
### Layouts
The layout generally contains the HTML skeleton such as the `,` ``, and other elements that your page may need. It leaves stubs for the page by defining `template` areas. These areas are defined by the page and are filled in dynamically.
By default, Copper generates the `web/src/layouts/main.html`. You can create as many layouts here as your app needs.
{% code title="web/src/layouts/main.html" %}
```html
Command Center
{{ template "content" }}
```
{% endcode %}
### Pages
A page represents the document that is rendered for a specific URL path. It is contained inside of a layout. It must define each template required by the layout.
{% code title="web/src/pages/index.html" %}
```html
{{ define "content" }}
{{ range .Rockets }}
{{ partial "rocket" . }}
{{ end }}
{{ end }}
```
{% endcode %}
### Partials
Finally, partials provide a way to move HTML snippets into their own components. These are defined in the `web/src/partials` directory. A partial named "rocket" must be defined in `rocket.html`.
{% code title="web/src/partials/rocket.html" %}
```html
This is rocket: {{ .Name }}
```
{% endcode %}
### Writing HTML Responses
Copper provides `chttp.JSONReaderWriter` that can be used to write HTML responses. `chttp.JSONReaderWriter` is available by default on Routers generated by the Copper CLI.
Use the `WriteHTML` method to take advatange of the layouts, pages, and partials defined in the `web/` directory.
```go
ro.rw.WriteHTML(w, r, chttp.WriteHTMLParams{
PageTemplate: "index.html",
LayoutTemplate: "main.html",
Data: map[string][]posts.Post{
"Rockets": allRockets,
},
})
```
In the example above, the `main.html` layout is used to render the `index.html` page. We also pass in data that can be accessed within the Go templates.
---
# Agent Instructions: Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://gocopper.gitbook.io/copper/http/html-views.md?ask=
```
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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.