[PATCH 09/16] man/curs_inopts.3x: Improve description.

The `ESC` character code is not actually special (the name of the
`ESCDELAY` extension notwithstanding).  What matters is whether the
first character read from the input stream is an ambiguous prefix to
multiple key-defining string capabilities.

Thanks to Antonio Niño Díaz for prompting a review of this material.
---
 man/curs_inopts.3x | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/man/curs_inopts.3x b/man/curs_inopts.3x
index c0db26d6f..3262d98c4 100644
--- a/man/curs_inopts.3x
+++ b/man/curs_inopts.3x
@@ -261,7 +261,10 @@ .SS keypad
 .RI ( bf
 is
 .BR TRUE ")"
-then when an input character reading function reads ESC,
+then when an input character reading function reads
+a character that is a common prefix to multiple
+key-defining string capabilities
+(typically ESC),
 it waits for further input corresponding to an escape sequence
 defined by the terminal type description.
 If a valid sequence populates the input stream,
@@ -367,14 +370,18 @@ .SS notimeout
 When
 .B \%keypad
 has been called on a window
-and the input character reading function reads an ESC character from it,
+and the input character reading function reads
+an ambiguous prefix character
+(typically ESC)
+from it,
 .I curses
 sets a timer while waiting for the next character.
 If the timer elapses,
 .I curses
-interprets the ESC as an explicit press of the terminal's Escape key
-(or equivalent).
-.\" like Control+[
+interprets the prefix as an explicit press
+of the key corresponding thereto,
+such as Escape for ESC.
+.\" or some equivalent, like Control+[
 .BI \%notimeout( win ,
 .B TRUE)
 disables this timer.
@@ -625,7 +632,8 @@ .SH NOTES
 and for how long.
 .B \%keypad
 configures whether that function waits for further input
-if the first character it reads is ESC.
+if the first character it reads is an ambiguous prefix
+(like ESC).
 Calling
 .BR \%notimeout ","
 which has nothing to do with
-- 
2.30.2

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