About "To And Fro"
To:	noun	1a expressing what is reached, approached, or touched.
And:	conjunction	1a connecting words, clauses or sentences, that are to be taken jointly.
Fro:	adverb	back (now only in to and fro: see to).
To And Fro (adverb) 1 backward and forward. 2 repeatedly between the same two points.