-These routines insert a character string (as many characters as will fit on the
-line) before the character under the cursor. All characters to the right of
-the cursor are shifted right, with the possibility of the rightmost characters
-on the line being lost. The cursor position does not change (after moving to
-\fIy\fR, \fIx\fR, if specified). The four routines with \fIn\fR as the last
-argument insert a leading substring of at most \fIn\fR characters. If
-\fIn\fR<=0, then the entire string is inserted.
-
-If a character in \fIstr\fR is a tab, newline, carriage return or
-backspace, the cursor is moved appropriately within the window. A
-newline also does a \fBclrtoeol\fR before moving. Tabs are considered
-to be at every eighth column. If a character in \fIstr\fR is another
-control character, it is drawn in the \fB^\fR\fIX\fR notation.
-Calling \fBwinch\fR after adding a control character (and moving to
-it, if necessary) does not return the control character, but instead
-returns a character in the ^-representation of the control character.
+These routines insert a character string
+(as many characters as will fit on the line)
+before the character under the cursor.
+All characters to the right of the cursor are shifted right
+with the possibility of the rightmost characters on the line being lost.
+The cursor position does not change
+(after moving to \fIy\fR, \fIx\fR, if specified).
+The functions with \fIn\fR as the last argument
+insert a leading substring of at most \fIn\fR characters.
+If \fIn\fR<=0, then the entire string is inserted.
+.PP
+Special characters are handled as in \fBaddch\fP.