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Thanks for your time.

Getting into black magic between plugins here and I don't have too much knowledge on the right WordPressy way to go about this, so:

Let's say I have an arbitrary plugin that adds 3 custom fields to every Post, but it doesn't require them or offer a setting to do so, and I want them required without hacking that plugin. What is the correct WordPress approach to enforce that they are filled with something valid on Publish?

Puck
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  • You are looking for [Action/Filter Hooks](http://codex.wordpress.org/Plugin_API/Hooks) – Rahil Wazir Oct 02 '14 at 23:26
  • I didn't know those could be used to hook fields in other plugins? I thought a hook had to be installed in WordPress for me to be able to leverage it? – Puck Oct 03 '14 at 03:45

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