What it meant by the term reference front?

The term "reference front" isn't a widely recognized term in common usage or in any specific field. It's possible you've encountered a mispronunciation, misspelling, or a unique term specific to a particular context.

To better understand what you mean, please provide more context:

* Where did you encounter this term? (e.g., book, article, website, conversation)

* What was the context? (e.g., what was being discussed before or after the term was used?)

* Can you give an example sentence or phrase where the term was used?

With more information, I can help you understand what the term "reference front" might refer to.