How to allow span tags?

I’m migrating existing code to MODX and there’s quite often used span tag for styling purposes. For some reason Redactor strips the span tag even it’s not in denied tags? What is the best way to setup Redactor to preserve span tags?

Do a search in the setting s for “Allowed Tags” add span.

Hi, You have to use either Allowed tags or Denied tags. It’s easier to use denied tags than specifically add all allowed tags. But maybe that’s only way to do it?