org: document HOA support

* doc/org/hoa.org: New file.
* doc/org/oaut.org, doc/org/tools.org: Link to it.
* doc/Makefile.am: Distribute it.

doc/Makefile.am

@@ -65,6 +65,7 @@ ORG_FILES = \
   org/csv.org \
   org/dstar2tgba.org \
   org/genltl.org \
+  org/hoa.org \
   org/ioltl.org \
   org/ltl2tgba.org \
   org/ltl2tgta.org \

doc/org/oaut.org

@@ -61,11 +61,12 @@ strange to ask a tool to not output anything, but it makes sense when
 only the exit status matters (for instance using [[file:autfilt.org][=autfilt=]] to check
 whether an input automaton has some property) or for timing purposes.
 
-* HOAF output
+* HOA output
 
-The [[http://adl.github.io/hoaf/][HOAF]] output should be the preferred format to use if you want to
+The [[http://adl.github.io/hoaf/][HOA]] output should be the preferred format to use if you want to
 pass automata between different tools.  This format can be requested
-using the =-H= option.
+using the =-H= option.  (Details about supported features of the HOA
+format can be found on a [[file:hoa.org][separate page]].)
 
 Here is an example where [[file:ltl2tgba.org][=ltl2tgba=]] is used to construct two automata:
 one for =a U b= and one for =(Ga -> Gb) W c=.
@@ -480,7 +481,7 @@ output in GraphViz's format.
 ltl2tgba '(Ga -> Gb) W c'
 #+END_SRC
 
-#+BEGIN_SRC sh :results verbatim :exports result
+#+BEGIN_SRC sh :results verbatim :exports results
 SPOT_DOTEXTRA= ltl2tgba '(Ga -> Gb) W c' --dot=
 #+END_SRC
 

doc/org/tools.org

@@ -29,10 +29,11 @@ Parts of these documents (e.g., lists of options) are actually the
 results of shell commands and will be presented as above, even if the
 corresponding commands are hidden.
 
-* Common options
+* Documentation common to multiple tools
 
 - [[file:ioltl.org][common input and output options for LTL/PSL formulas]]
 - [[file:oaut.org][common output options for automata]]
+- [[file:hoa.org][input and output support for the HOA format]]
 
 * Command-line tools