function docs improvements

test/mains/test_new.rb

@@ -5,11 +5,12 @@ module Mains
     include Risc::Ticker
 
     def setup
-      @string_input = as_main("a = 98 ; while(a>0) ; a = a - 1 ; end ; return a")
+      @string_input = as_main("a = 1011 ; while(a>0) ; a = a - 1 ; end ; return a")
       super
     end
-    def test_chain # max 98 iterations on 300 integers
+    def test_chain # max 1011 iterations on 1014 integers (1024 - 10 reserve)
       run_all
+      assert_equal Fixnum , get_return.class , " "
       assert_equal 0 , get_return , " "
     end