'What is meaning of # in espeak\dictsource\en_list

I'm trying to convert English sounds to IPA symbols in code. I came across espeak, which has good collection of words with corresponding sounds for English in en_list.

As per my understanding so far, e-speak uses Kirshenbaum representation.

In en_list, I come across usage of #, eg: anomaly a#n0m@li

But # is unused character as per Kirshenbaum.

So, wanted to know meaning of # in en_list



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