1 files changed, 36 insertions, 0 deletions
diff --git a/contrib/nvi/docs/internals/openmode b/contrib/nvi/docs/internals/openmode
new file mode 100644
index 0000000..c64b767
--- /dev/null
+++ b/contrib/nvi/docs/internals/openmode
@@ -0,0 +1,36 @@
+	@(#)openmode	8.1 (Berkeley) 10/29/94
+
+Open mode has the following special behaviors:
+
+z, ^F, ^B:
+	If count is not specified, it shall default to the window
+	edit option - 2.
+
+	Write lines from the edit buffer starting at:
+
+		(the current line) - ((count - 2) / 2)
+
+	until:
+
+		(((count + 1) / 2) * 2) - 1
+	
+	lines, or the last line in the edit buffer has been written.  A
+	line consisting of the smaller of the number of columns in the
+	display divided by two or 40 ``-'' characters shall be written
+	immediately before and after the specified is written.  These two
+	lines shall count against the total number of lines to be written.
+	A blank line shall be written after the last line is written.
+
+	z, ^F and ^B all behave identically.
+
+^D:	Display the next scroll value lines, change the current line.
+
+^U:	Change the current line, do nothing else.
+
+^E, ^Y:	Do nothing.
+
+^L:	Clear the screen and redisplay the current line.
+
+H, L, M:
+	Move to the first nonblank of the current line and do nothing
+	else.