Reply To: label changes

I can see this help in the QuickTips, but I don’t know how to find the string names to change:

Every string in a template can be customized to suit your specific needs. This can be done by setting template enabled shortcode options. These string shortcode options all begin with “str_”. Every template differs on what strings are available to be customized, please refer to the template’s documentation [currently under construction] to learn more. But here’s a couple examples that will work across most templates.