I think you have just been lucky. I have never been able to get a single $ to work. The manual states:

code:

---

Note
The characters @, %, or $ are normally used to indicate macros, environment strings, or variables. If you want to use these characters in a string, use @@, %%, or $$. 

---

I think it best to have new users use the correct syntax. It will make the code much more portable.

------------------
Regards,

Brad
Consultant
Net InfraStructure, Inc