This is what I love about this forum....the occassional sniping aside, there's lots of experience here....nobody knows everything, its a lot of bits and pieces coming together.  

My questions are these.  Is there a difference between a shareholder deficit and the accumulated deficit?  I'm reasonably well acquainted with the term 'accumulated deficit', which I take to be the amount lost over time by a company.  

You cite a 'shareholder defict' of $194 million.  Is this money that must be paid back?   

I just checked investopedia, and they describe it in terms of shareholder equity.  Basically if a company were to be disolved, after paying off all debts and such....whatever is left over represents shareholder equity.  

Ostensibly in Resverlogix's case, if the company were disolved the $194 million you cite is the number that would be owed after selling off all the assets....thankfully shareholders are not liable for deficits.  

https://www.investopedia.com/ask/answers/08/negative-shareholder-equity.asp

It seems pretty closely aligned with another metric I'm more familar with, that being 'Book Value'....our book value per share is $0.95 as per stockguru, and I assume that's American as I used the RVXCF symbol.

https://www.gurufocus.com/term/Book+Value+Per+Share/OTCPK:RVXCF/Book-Value-per-Share/Resverlogix

If I have this right its not debt in the sense that they're paying interest on a loan with a principle that must be repaid.