SEO template

Hi,

I just looked at the source of a web page and nothing has been entered in robots, e.g. robots=" "

Here is the template in question:

<meta name="description" content="<perch:pages id="description" label="Description" type="textarea" size="xs" escape="true" count="chars" />" />
<meta name="keywords" content="<perch:pages id="keywords" label="Keywords" type="textarea" size="xs" escape="true" help="Separate with commas" count="chars" />" />
<meta name="robots" content="<perch:pages id="noindex" label="Do not index" type="checkbox" value="noindex" append="," divider-before="Search engine indexing" /><perch:pages id="nofollow" label="Do not follow links" type="checkbox" value="nofollow" append="," /><perch:pages id="nosnippet" label="Do not show a snippet" type="checkbox" value="nosnippet" append="," />" />

Would anyone know why when the box is unchecked it does not put information in that would assist a search engine or does blank mean index content?

Thank you