SPEC should be an alist of the form ((DISPLAY ATTS)...).
-ATTS is of the form (KEY TYPE SET GET) where KEY is a symbol of
-`:foreground', `:background', `:bold', `:italic' or `:underline'.
-The other KEYs are ignored.
+ATTS is of the form (KEY VALUE) where KEY is a symbol of `:foreground',
+`:background', `:bold', `:italic' or `:underline'. The other KEYs are
+ignored.
The ATTS of the first entry in SPEC where the DISPLAY matches the
frame should take effect in that frame. DISPLAY can either be the