Merge pull request #1144 from WalterBright/function-nav

function.html: add simple navigation

function.dd

@@ -2,6 +2,41 @@ Ddoc
 
 $(SPEC_S Functions,
 
+$(P
+$(RELATIVE_LINK2 contracts, Contracts)
+$(RELATIVE_LINK2 function-return-values, Function Return Values)
+$(RELATIVE_LINK2 function-declarations, Functions Without Bodies)
+$(RELATIVE_LINK2 pure-functions, Pure Functions)
+$(RELATIVE_LINK2 nothrow-functions, Nothrow Functions)
+$(RELATIVE_LINK2 ref-functions, Ref Functions)
+$(RELATIVE_LINK2 auto-functions, Auto Functions)
+$(RELATIVE_LINK2 auto-ref-functions, Auto Ref Functions)
+$(RELATIVE_LINK2 inout-functions, Inout Functions)
+$(RELATIVE_LINK2 optional-parenthesis, Optional Parentheses)
+$(RELATIVE_LINK2 property-functions, Property Functions)
+$(RELATIVE_LINK2 virtual-functions, Virtual Functions)
+$(RELATIVE_LINK2 function-inheritance, Function Inheritance and Overriding)
+$(RELATIVE_LINK2 inline-functions, Inline Functions)
+$(RELATIVE_LINK2 function-overloading, Function Overloading)
+$(RELATIVE_LINK2 overload-sets, Overload Sets)
+$(RELATIVE_LINK2 parameters, Function Parameters)
+$(RELATIVE_LINK2 function-default-args, Function Default Arguments)
+$(RELATIVE_LINK2 variadic, Variadic Functions)
+$(RELATIVE_LINK2 variadicnested, Nested Functions)
+$(RELATIVE_LINK2 closures, Delegates, Function Pointers, and  Closures)
+$(RELATIVE_LINK2 anonymous, Anonymous Functions and Anonymous Delegates)
+$(RELATIVE_LINK2 main, $(D main()) Function)
+$(RELATIVE_LINK2 function-templates, Function Templates)
+$(RELATIVE_LINK2 interpretation, Compile Time Function Execution (CTFE))
+$(RELATIVE_LINK2 string-mixins, String Mixins and Compile Time Function Execution)
+$(RELATIVE_LINK2 function-safety, Function Safety)
+$(RELATIVE_LINK2 safe-functions, Safe Functions)
+$(RELATIVE_LINK2 trusted-functions, Trusted Functions)
+$(RELATIVE_LINK2 system-functions, System Functions)
+$(RELATIVE_LINK2 function-attribute-inference, Function Attribute Inference)
+$(RELATIVE_LINK2 pseudo-member, Uniform Function Call Syntax (UFCS))
+)
+
 $(GRAMMAR
 $(GNAME FuncDeclaration):
     $(GLINK2 declaration, StorageClasses)$(OPT) $(GLINK2 declaration, BasicType) $(GLINK FuncDeclarator) $(GLINK FunctionBody)
@@ -90,7 +125,7 @@ $(GNAME BodyStatement):
     $(D body) $(GLINK2 statement, BlockStatement)
 )
 
-$(H4 Contracts)
+$(H4 $(LNAME2 contracts, Contracts))
 
 	$(P The $(D in) and $(D out) blocks of a function declaration specify
 	the pre- and post-conditions of the function. They are used in $(LINK2
@@ -99,13 +134,13 @@ $(H4 Contracts)
 	and/or return values.
 	)
 
-$(H4 Function Return Values)
+$(H4 $(LNAME2 function-return-values, Function Return Values))
 
         $(P Function return values are considered to be rvalues.
         This means they cannot be passed by reference to other functions.
         )
 
-$(H4 Functions Without Bodies)
+$(H4 $(LNAME2 function-declarations, Functions Without Bodies))
 
 	$(P Functions without bodies:)
 
@@ -818,7 +853,7 @@ void main()
 ------
 
 
-$(H4 Inline Functions)
+$(H4 $(LNAME2 inline-functions, Inline Functions))
 
         $(P There is no inline keyword. The compiler makes the decision whether to
         inline a function or not, analogously to the register keyword no
@@ -1075,7 +1110,7 @@ $(CONSOLE
         $(P A $(D lazy) parameter of type $(D void) can accept an argument
         of any type.)
 
-$(H4 Function Default Arguments)
+$(H4 $(LNAME2 function-default-args, Function Default Arguments))
 
         $(P Function parameter declarations can have default values:)
 
@@ -1861,12 +1896,12 @@ void test()
         into a common syntax and be interchangeable with each other.
         )
 
-$(H4 Anonymous Functions and Anonymous Delegates)
+$(H4 $(LNAME2 anonymous, Anonymous Functions and Anonymous Delegates))
 
         $(P See $(GLINK2 expression, FunctionLiteral)s.
         )
 
-$(H3 $(D main()) Function)
+$(H3 $(LNAME2 main, $(D main()) Function))
 
         $(P For console programs, $(D main()) serves as the entry point.
         It gets called after all the module initializers are run, and
@@ -2075,7 +2110,7 @@ void foo()
     $(P These are the same kinds of scenarios where different
     optimization settings affect the results.)
 
-$(H4 String Mixins and Compile Time Function Execution)
+$(H4 $(LNAME2 string-mixins, String Mixins and Compile Time Function Execution))
 
         $(P Any functions that execute at compile time must also
         be executable at run time. The compile time evaluation of