Question about TBL on pattern

Here I am again with my daily question it seems like. Definitely can tell that I’m new at knitting. My question is what does it mean when it says P1 (p1, p1 tbl) into double yo. My question is what is P1 TBL into double yarn over. Please help.If this helps it’s in Vogue Knitting pattern number 31 on page 122.

It means to purl one through the back of the loop. If you go to the glossary tab and scroll down, there is a video there for you to see how it is done. :thumbsup:

Thank you so much I really appreciate it. I’ll go look at the video now.