+++ This bug was initially created as a clone of Bug #26226 +++

Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/association-of-controls-and-forms.html
Multipage: http://www.whatwg.org/C#enabling-and-disabling-form-controls:-the-disabled-attribute
Complete: http://www.whatwg.org/c#enabling-and-disabling-form-controls:-the-disabled-attribute
Referrer: http://www.whatwg.org/specs/web-apps/current-work/multipage/section-index.html

Comment:
Clarify "A form control is disabled…"

<Hixie> Ms2ger: [form controls] are disabled if they have a disabled attribute set, where "disabled attribute" is specifically "attr-fe-disabled", which only some elements can have setµ
<Ms2ger> Hixie, that's pretty obscure
<Hixie> Ms2ger: no disagreement from me there :-)
<Ms2ger> Hixie, I think that's worth a note, at least
<Hixie> Ms2ger: absolutely agreed
<Hixie> Ms2ger: file a bug :-)

Your change in bug #26226 still doesn't make it clear that you refer to one particular kind of "disabled" attribute.