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So index file has this line of code `do_action(‘unblock_blog_home_heading’);` while a template functions file has this line `add_action(‘unblock_blog_home_heading’, ‘unblock_welcome_intro_content’);` and this add\_action is the only place I see this `unblock_blog_home_heading` being defined.
My understanding was that the first argument to add\_action is the name of the hook where you want the callback function to execute. So the names are provided by WordPress such as after\_setup\_theme. But looking at this it seems this first argument can also be used to create hook names on your own? which can then be executed by do\_action?
Is my understanding correct?
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It goes something like this:
When you see `do_action(‘unblock_blog_home_heading’)` it says, here is a point (hook) where you may insert some content and you will refer to it by the handle `’unblock_blog_home_heading’`.
The `add_action(‘unblock_blog_home_heading’, ‘unblock_welcome_intro_content’)` says, wherever there is a `’unblock_blog_home_heading’` hook I want to insert the output from the `’unblock_welcome_intro_content’` function.