Abbreviation query

Hi knitters, this is my first post. I have a query about an abbreviation in a knitting lace edging pattern. The row is described as this" SL1, o, n, o, K2. Does anyone know what the letters o n o mean?
Many thanks.

Welcome to the forum!
What is the name of your pattern and designer?
Check the text in the beginning of the pattern or perhaps a list of abbreviations to see if it’s listed or if the individual letters are listed. O is sometimes stands for yarn over.
You can quote the entire row if you’d like. Don’t give us a large portion of the pattern due to designer copyright please.