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(tpl->response filename/sxml [environment <- (the-environment)] [escape? <- #f]) (tpl->html filename/sxm [environment <- (the-environment)] [escape? <- #f])
The difference is that tpl->html returns a string, but tpl->response returns an HTTP object response.
[environment] is the environment you want to use. We often ignore it. If you want to ref some vars defined outside your template string, you need to pass this variable.
[escape?] If you want to char-escape the HTML with the returned string, set it to #t.
There are two main ways of writing templates: