Finish revision of help functions: explain curve functional.

pub/lib/fregistry.cpp

@@ -47,7 +47,7 @@ void SFuncRegistry::display_operators() const
     for( auto f: FList ){
         if( !f->precedence )
             continue;
-        cout << " " << f->explanation << "\n";
+        cout << "  " << f->explanation << "\n";
     }
 }
 

pub/lib/geni.cpp

@@ -283,7 +283,7 @@ void NGeni::display_genis()
     cout << "Implemented functionals:\n";
     for( auto g = glist.begin(); g!=glist.end(); ++g ) {
         string s1 = (*g)->name + "(" + (*g)->default_arg_str + ")";
-        cout << " " << str( format("%-14s") % s1 ) << (*g)->com << "\n";
+        cout << "  " << str( format("%-14s") % s1 ) << (*g)->com << "\n";
     }
 }
 

pub/lib/integrate.cpp

@@ -151,13 +151,17 @@ void CCvin::register_me() const
 
 void NCvin::display_cvins()
 {
-    cout << "Curve functionals:\n";
+    cout << "Dimension-reducing functionals of curves.\n";
+    cout << "Usage:\n";
+    cout << "  - most typically in command 'oi'\n";
+    cout << "  - also directly at the command prompt (pocket-calculator mode, only for nj=1)\n";
+    cout << "Implemented functionals:\n";
     for( auto g = hlist.begin(); g!=hlist.end(); ++g ) {
         string s1 = (*g)->txt + "(a";
         if( (*g)->narg>1 )
             s1 += ",b";
         s1 += ")";
-        cout << " " << str( format("%-14s") % s1 ) << (*g)->com << "\n";
+        cout << "  " << str( format("%-14s") % s1 ) << (*g)->com << "\n";
     }
 }
 
@@ -165,5 +169,5 @@ void NCvin::initialize()
 {
     // operators by precedence (as in xax_yacc.ypp):
     (new CCvin( "integrate", 2, "-inf,inf", cvin_integrate,
-                "integrate curve from a to b" ))->register_me();
+                "numerical integration of curve from a to b" ))->register_me();
 }