minor documentation improvements

lib/core/typeinfo.nim

@@ -7,9 +7,12 @@
 #    distribution, for details about the copyright.
 #
 
-## This module implements an interface to Nimrod's runtime type information.
+## This module implements an interface to Nim's runtime type information.
 ## Note that even though ``TAny`` and its operations hide the nasty low level
 ## details from its clients, it remains inherently unsafe!
+## 
+## See the `marshal <marshal.html>`_ module for what this module allows you
+## to do. 
 
 {.push hints: off.}
 
@@ -51,7 +54,7 @@ type
     akUInt32 = 43,      ## any represents an unsigned int32
     akUInt64 = 44,      ## any represents an unsigned int64
     
-  TAny* = object {.pure.} ## can represent any nim value; NOTE: the wrapped
+  TAny* = object          ## can represent any nim value; NOTE: the wrapped
                           ## value can be modified with its wrapper! This means
                           ## that ``TAny`` keeps a non-traced pointer to its
                           ## wrapped value and **must not** live longer than
@@ -62,7 +65,7 @@ type
   ppointer = ptr pointer
   pbyteArray = ptr array[0.. 0xffff, int8]
 
-  TGenSeq {.pure.} = object
+  TGenSeq = object
     len, space: int
   PGenSeq = ptr TGenSeq