minor

lib/register/instructions/function_return.rb

@@ -1,7 +1,7 @@
 module Register
 
   # return from a function call
-  #register and index specify where the return address is stored
+  # register and index specify where the return address is stored
 
   class FunctionReturn < Instruction
     def initialize register , index

lib/register/instructions/save_return.rb

@@ -3,6 +3,9 @@ module Register
   # save the return address of a call
   # register and index specify where the return address is stored
 
+  # This instruction exists mainly, so we don't have to hard-code where the machine stores the 
+  # address. In arm that is a register, but intel may (?) push it, and who knows, what other machines do.
+
   class SaveReturn < Instruction
     def initialize register , index
       @register = register