whatis_coord - rename 'getpos_coord' option

Rename the option for adding coordinates to autodescribe feedback for
the '/' and ';' commands from 'getpos_coord' to 'whatis_coord', after
the '/' command that uses it instead of after the internal routine
that implements it.  The 'whatis' name was only in dat/hh as far as I
could find, so this changes it to 'what-is' and also updates dat/help
and the Guidebook to mention the name too.

Add a 'screen' choice to the option to show coordinates as row,column
rather than x,y or compass direction(s).  Revise the /m, /M, /o, /O
operations of 'what-is' to honor the whatis_coord option (mostly; a
value of 'none' gets overridden by 'map' to force coordinates).

Also, update the description of the functionality of the '/' command
in the Guidebook.  The .mn version is tested, the .tex one isn't.

doc/Guidebook.mn

@@ -5,7 +5,7 @@
 .ds vr "NetHack 3.6
 .ds f0 "\*(vr
 .ds f1
-.ds f2 "December 16, 2015
+.ds f2 "January 18, 2016
 .\" labeled paragraph start (should be part of tmac.n, but I don't want to
 .\" make changes to that file)
 .\" .PS word
@@ -476,7 +476,8 @@ helpful texts.  Here are the commands for your reference:
 .lp ?
 Help menu:  display one of several help texts available.
 .lp /
-Tell what a symbol represents.  You may choose to specify a location
+The ``what-is'' command, to
+tell what a symbol represents.  You may choose to specify a location
 or type a symbol (or even a whole word) to explain.
 Specifying a location is done by moving the cursor to a particular spot
 on the map and then pressing one of `.', `,', `;',
@@ -485,14 +486,31 @@ conditionally check for ``More info?'' depending upon whether the
 .op help
 option is on, and then you will be asked to pick another location;
 `,' will explain the symbol but skip any additional
-information; `;' will skip additional info and also not bother asking
+information, then let you pick another location;
+`;' will skip additional info and also not bother asking
 you to choose another location to examine; `:' will show additional
 info, if any, without asking for confirmation.  When picking a location,
 pressing the ESC key will terminate this command, or pressing `?'
 will give a brief reminder about how it works.
-.pg
+.lp ""
+If the
+.op autodescribe
+option is on, a short description of what you see at each location is
+shown as you move the cursor.  Typing `#' while picking a location will
+toggle that option on or off.
+The
+.op whatis_coord
+option controls whether the short description includes map coordinates.
+.lp ""
 Specifying a name rather than a location
 always gives any additional information available about that name.
+.lp ""
+You may also request a description of nearby monsters,
+all monsters currently displayed, nearby objects, or all objects.
+The
+.op whatis_coord
+option controls which format of map coordinate is included with their
+descriptions.
 .lp &
 Tell what a command does.
 .lp <
@@ -1995,7 +2013,9 @@ exclude that alignment from being picked randomly.
 Cannot be set with the `O' command.  Persistent.
 .lp autodescribe
 Automatically describe the terrain under cursor when asked to get a location
-on the map.
+on the map.  The
+.op whatis_coord
+option controls whether the description includes map coordinates.
 .lp autodig
 Automatically dig if you are wielding a digging tool and moving into a place
 that can be dug (default false). Persistent.
@@ -2125,11 +2145,6 @@ The default is to randomly pick an appropriate gender.
 If you prefix a `!' or ``no'' to the value, you can 
 exclude that gender from being picked randomly.
 Cannot be set with the `O' command.  Persistent.
-.lp getpos_coord
-When using the `/' command to look around on the map with
-``autodescribe'' on, display coordinates after the description.
-The value specified should be the first letter of one of the following:
-compass, map, or none.  Default is none.
 .lp "help    "
 If more information is available for an object looked at
 with the `/' command, ask if you want to see it (default on). Turning help
@@ -2514,6 +2529,27 @@ prevent the game from attempting unintended moves if you make inadvertent
 mouse clicks on the map window.  Persistent.
 .lp verbose
 Provide more commentary during the game (default on).  Persistent.
+.lp whatis_coord
+When using the `/' or `;' commands to look around on the map with
+.op autodescribe
+on, display coordinates after the description.
+Also works in other situations where you are asked to pick a location.
+.lp ""
+The possibile settings are:
+.sd
+.si
+.CC c "compass ('east' or '3s' or '2n,4w');"
+.CC m "map <x,y> (map column x=0 is not used);"
+.CC s "screen [row,column] (row is offset to match tty usage);"
+.CC n "none (no coordinates shown) [default]."
+.ei
+.ed
+.lp ""
+The
+.op whatis_coord
+option is also used with
+the `/m', `/M', `/o', and `/O' sub-commands of `/',
+where the `none' setting is overridden with `map'.
 .lp windowtype
 Select which windowing system to use, such as ``tty'' or ``X11''
 (default depends on version).