Variable: x-resource-class

The class Emacs uses to look up X resources.
`x-get-resource' uses this as the first component of the instance class
when requesting resource values.

Emacs initially sets `x-resource-class' to "Emacs".

Setting this variable permanently is not a reasonable thing to do,
but binding this variable locally around a call to `x-get-resource'
is a reasonable practice. See also the variable `x-resource-name'.