Student or Learner
"Now, I don't recollect the time
I fell in love with this old friend of mine
Or when I first saw in her eyes
What she tried so not to hide"
[what one tried so not to V]
1.Is 'so' a conjunction = so that ?
2. Is 'what one tried so not to V' a common pattern? What does it mean?
Please give some examples.