RELATIVAL CONSTRUCTIONS. "So--(that);" "(so)--that"(So) that. So before that is very frequently omitted:
Compare Macb. i. 7. 8, ii. 2. 7, ii. 2. 24; J. C. i. 1. 50. In all these omissions the missing word can be so easily supplied from its correspondent that the desire of brevity is a sufficient explanation of the omission.
“Ross. The victory fell on us. Dunc. Great happiness!
Ross. (So) that now Sueno, the Norway's king, craves composition.
“A sheet of paper
Writ o' both sides the leaf, margent and all,
That he was fain to seal on Cupid's name.