Is the <xf:head option actually used for anything?

[Stuart Wright]

I want to use a conditional to put - or not put - some custom JS and style script in the head of a template.
I see that every example of the <xf:head tag has an option.
e.g.
Code:

<xf:head option="metaNoindex"><meta name="robots" content="noindex" /></xf:head>
Is the option actually used for anything?
Thanks

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