-.SS bkgdset
-The \fBbkgdset\fR and \fBwbkgdset\fR routines manipulate the
-background of the named window.
-The window background is a \fBchtype\fR consisting of
-any combination of attributes (i.e., rendition) and a character.
-The attribute part of the background is combined (OR'ed) with all non-blank
-characters that are written into the window with \fBwaddch\fR.
-Both the character and attribute parts of the background are combined with
-the blank characters.
-The background becomes a property of the
-character and moves with the character through any scrolling and
-insert/delete line/character operations.
-.PP
-To the extent possible on a particular terminal,
-the attribute part of the background is displayed
-as the graphic rendition of the character put on the screen.
-.SS bkgd
-.PP
-The \fBbkgd\fR and \fBwbkgd\fR functions
-set the background property of the current or specified window
-and then apply this setting to every character position in that window.
-According to X/Open Curses, it should do this:
+The
+.I background
+of a
+.I curses
+window
+(in the library's non-\*(``wide\*('' configuration)
+is a
+.I \%chtype
+combining a set of attributes
+(see \fB\%curs_attr\fP(3X))
+with a character called the
+.I "blank character."
+.PP
+The blank character is a spacing character that populates a window's
+character cells when their contents are erased without replacement.
+The background's attributes are combined with all non-blank characters
+written to the window,
+as with the \fB\%waddch\fP(3X) and \fB\%winsch\fP(3X) families of
+functions.