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On 20/12/16 02:29, zengchen wrote:
> Hi, Heat stackers:
>     May I ask a question about the endpoint of Heat. I see the endpoints
> of Heat registered to Keystone look like this.
> 'http://10.229.45.150:8004/v1/$(project_id)s' . My question is that why
> use '$' instead of '%' as the replacement symbol.
> Is there some kind of rule?

Keystone supports either syntax. IIRC this one is slightly preferred. 
It's really not important.

- ZB