[FIG(quote)[
[FIGCAPTION[
[1] [CITE@ja[OAuth 1.0 API Reference - Google Accounts Authentication and Authorization — Google Developers]]
([TIME[2014-12-05 11:52:26 +09:00]] 版)
<https://developers.google.com/accounts/docs/OAuth_ref#GetAuth>
]FIGCAPTION]

> hd	(optional) String value identifying a particular hosted domain account to be accessed (for example, 'mycollege.edu'). Use "default" to specify a regular Google account ('username@gmail.com'). This is a Google-specific parameter.

]FIG]