-indicate that it applies everywhere. LOCALE usually defaults to
-`global' if omitted.
-
-VALUE is usually what is called an \"instantiator\" (which, roughly
-speaking, corresponds to the \"value\" of the property governed by
-SPECIFIER). The valid instantiators for SPECIFIER depend on the type
-of SPECIFIER (which you can determine using `specifier-type'). The
-specifier `scrollbar-width', for example, is of type `integer',
-meaning its valid instantiators are integers. The specifier governing
-the background color of the `default' face (you can retrieve this
-specifier using `(face-background 'default)') is of type `color',
-meaning its valid instantiators are strings naming colors and
-color-instance objects. For some types of specifiers, such as `image'
-and `toolbar', the instantiators can be very complex. Generally this
-is documented in the appropriate creation function --
-e.g. `make-color-specifier', `make-font-specifier',
-`make-image-specifier' -- or in the global variable holding the most
-common specifier for that type (`default-toolbar', `default-gutter',
-`current-display-table').
-
-NOTE: It does *not* work to give a VALUE of nil as a way of
-removing the specifications for a locale. Use `remove-specifier'
-instead. (And keep in mind that, if you omit the LOCALE argument
-to `remove-specifier', it removes *all* specifications! If you
-want to remove just the `global' specification, make sure to
-specify a LOCALE of `global'.)
-
-VALUE can also be a list of instantiators. This means basically,
-\"try each one in turn until you get one that works\". This allows
-you to give funky instantiators that may only work in some cases,
-and provide more normal backups for the other cases. (For example,
-you might like the color \"darkseagreen2\", but some X servers
-don't recognize this color, so you could provide a backup
-\"forest green\". Color TTY devices probably won't recognize this
-either, so you could provide a second backup \"green\". You'd
-do this by specifying this list of instantiators:
-
-'(\"darkseagreen2\" \"forest green\" \"green\")
-
-VALUE can also be various more complicated forms; see below.