Our probands should solve a modular arithmetic problem. Therefore we created an experiment with inquisit. We infixed the symbol '≡' by copy and paste from a word document. Inquisit was able to indicate this symbol. But as soon as we closed our data file and opend the same file again, the symbol '≡' was transformed into '='.

My question: Are there any opportunities to present the symbol '≡ '?

Thank you for your answer!