(c) Substantive conjunction.

We wish that labor may look up here, and be proud in the midst of its toil.—Webster.

WHAT.

330. (1) Relative pronoun.

That is what I understand by scientific education.—Huxley.

(a) Indefinite relative.

Those shadowy recollections,
Which be they what they may,
Are yet the fountain light of all our day.
—Wordsworth.

(2) Interrogative pronoun: (a) Direct question.

What would be an English merchant's character after a few such transactions?—Thackeray.

(b) Indirect question.