# Flags

If you prefix any of your element's attributes with a `p:` it becomes a _flag_.

Flags are passed to `this.flags` and are recommended for namespacing your "service" attributes.

## Available flags

Pillar also pre-defines some flags that change the behavior of Pillar components:

#### `p:ignore-children`

If this flag is set, content of a custom element tag won't be passed to `this.props.children` when
component is rendered.

#### `p:protected`

This flag locks external attribute manipulation. If an external force like jQuery is trying to
change an element with this flag, changes won't be passed down to `this.props` and it will throw an
error.

**_Next: [Shadow DOM→](./3_SHADOW_DOM.html)_**