title = "Demonstration" url = "/" layout = "default" ==
{% content "welcome.htm" %}

## Overview Basic concepts

This page demonstrates the basic CMS features. Usually each page built with October is a combination of a layout, page, partials and content blocks, although in simple cases you can just use a page without anything else.

### Layouts

Layouts define the page scaffold.

The layout file `layouts/default.htm` defines the page scaffold — everything that repeats on each page, such as the HTML, HEAD and BODY tags, StyleSheet and JavaScript references.

The page menu and footer in the Demo theme are defined in the layout as well.

### Pages

Pages hold the content for each URL.

The page file `pages/home.htm` defines the page URL (`/` for this page) and the page content. Pages are rendered inside layouts with this function that should be called in the layout code:

    {{ "{% page %}" }}

Using a layout for pages is optional — you can define everything right in the page file.

### Partials

Partials contain reusable chunks of HTML markup.

Partials are chunks of HTML defined in separate files which can be included anywhere. In this example we placed the footer content to the `partials/footer.htm` partial. Partials are rendered with:

    {{ "{% partial \"partial-name\" %}" }}

It can be used inside pages, templates or other partials.

### Content blocks

Content blocks are text or HTML blocks that can be edited separately from the page or layout.

The introductory text used on this page is defined in the `content/welcome.htm` file. Content blocks are defined and rendered with:

    {{ "{% content \"content-name.htm\" %}" }}

### Placeholders

Placeholders allow pages to inject content to a layout.

The common use is injecting page-specific links to StyleSheet or JavaScript files to the HEAD tag defined in the layout. Placeholders are defined in the layout file and they have names so that they can be referred in the page. Example:

Layout file:

    {% filter escape %}{% content "placeholder/layout.txt" %}{% endfilter %}

Page file:

    {% filter escape %}{% content "placeholder/page.txt" %}{% endfilter %}

### Assets

Assets are resource files like images and stylesheets.

This theme stores its asset files (JavaScript, StyleSheet, images, fonts, etc) in the `themes/demo/assets` directory. This theme is also packaged with these useful 3rd party tools:

- Twitter Bootstrap
- Font Awesome
- Lato webfont

You might prefer to remove them for your website implementation.

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