bugfixes for generics; new threads implementation still broken

doc/manual.txt

@@ -433,6 +433,15 @@ have no side-effect can be used in constant expressions too:
     constEval = contains("abc", 'b') # computed at compile time!
 
 
+The rules for compile-time computability are: 
+
+1. Literals are compile-time computable.
+2. Procedure calls of the form ``p(X)`` are compile-time computable if
+   ``p`` is a proc without side-effects (see the `noSideEffect pragma`_ 
+   for details) and if ``X`` is a (possibly empty) list of compile-time 
+   computable arguments.
+
+
 Types
 -----
 
@@ -2900,17 +2909,17 @@ structure:
 
 Pure pragma
 -----------
-An object type can be marked with the `pure`:idx: pragma so that its type 
+An object type can be marked with the `pure`:idx: pragma so that its type 
 field which is used for runtime type identification is omitted. This is
 necessary for binary compatibility with other compiled languages.
-
-
-NoStackFrame pragma
--------------------
-A proc can be marked with the `noStackFrame`:idx: pragma to tell the compiler
-it should not generate a stack frame for the proc. There are also no exit
-statements like ``return result;`` generated. This is useful for procs that 
-only consist of an assembler statement.
+
+
+NoStackFrame pragma
+-------------------
+A proc can be marked with the `noStackFrame`:idx: pragma to tell the compiler
+it should not generate a stack frame for the proc. There are also no exit
+statements like ``return result;`` generated. This is useful for procs that 
+only consist of an assembler statement.
 
 
 error pragma