adv. andconj. = 24. so .. that [=] in such a way, to such an extent, that
25. a. With omission of that, = sense 24.
26. a. so (that) , in limiting sense: On condition that, provided that, so long as, if only. Cf. 30. [Caution: Entry 26 is subdivided into (a) and (b). I refer to (a); only its sentences omit that).
These answers assert differences between that and so that, which disprove 25 and 26,
and which explode the above uses of that (to mean so that).
The equalisation of so to so that in 25 and 26:
1. How and whence did it originate?
2. Is it wrong?
3. What might have deceived the aforesaid authors to use this wrong equalisation?