[PATCH 04/22] man/curs_addch.3x: Add "HISTORY" section.

[G. Branden Robinson]

---
 man/curs_addch.3x | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/man/curs_addch.3x b/man/curs_addch.3x
index c2bca7c9e..78d783cd4 100644
--- a/man/curs_addch.3x
+++ b/man/curs_addch.3x
@@ -368,6 +368,9 @@ .SS "ACS Symbols"
 and
 .BR \%ACS_STERLING )
 were not documented in any publicly released System\ V.
+.\" And did not exist yet as late as SVr4.
+.\" https://github.com/ryanwoodsmall/oldsysv/blob/master/\
+.\"   sysvr4/svr4/lib/xlibcurses/screen/curses.ed
 However,
 many publicly available
 .I \%term\%info
@@ -467,6 +470,15 @@ .SS "Character Set"
 If it cannot,
 use only
 \fB\%wadd_wch\fP(3X).
+.SH HISTORY
+The original
+.I curses
+in 4BSD (1980) introduced
+.IR \%waddch "."
+.PP
+SVr3 (1987)
+added
+.IR \%wechochar "."
 .SH SEE ALSO
 \fB\%curs_add_wch\fP(3X) describes comparable functions of the
 .I \%ncurses
-- 
2.30.2

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