some more doc

AUTHORS

@@ -3,6 +3,7 @@ Current authors:
 Andreas Enge, co-author of cmh since 2010
 Emmanuel Thomé, co-author of cmh since 2010
 
+Authors may be reached by contact means easily found by Internet search.
 
 Previous author:
 

README

@@ -123,11 +123,10 @@ square, and (A,B) minimal in the sense that no smaller pair defines the
 same field (the script complains if this is the case). The special case
 where the Galois group of X^4+A*X^2+B is Z/2 * Z/2 is also forbidden.
 
-The main entry point is the script:
+The main entry point is the script placed in the following location by
+"make install":
     $prefix/bin/cmh-classpol.sh
 
-(this script appears only once `make' has been called)
-
 Its syntax is:
     $prefix/bin/cmh-classpol.sh -p -f A B
 
@@ -153,6 +152,9 @@ computed class polynomial for correctness as follows (see also BUGS).
    invariants
  - check that the Jacobian of the curve above has cardinal Norm(1\pm pi).
 
+Some other flags are mostly for interal use. Noteworthy ones are -N,
+which disables the temporary checkpoint data creation, and -b xxxx, which
+modifies the starting precision.
 
 Output
 ------