3/4 <ATC> and Trade

This is a general tagging ending, subject to all the usual revert/reflect stuff.

Tag to the 3/4 position. Centers Trade the Wave while the ends trade.

Because the phrase "and trade" can be misconstrued so easily, this is a linguistically dangerous call. Saying just "Tag and Trade" would have the dancers wondering what alternative parsings exist. So the caller will generally put the phrase "3/4" in it somewhere, as in "3/4 Flip and Trade" or "Vertical Tag 3/4 and Trade". (Of course, putting "3/4" in front of a call runs the risk of making dancers think it is being fractionalized, so it's still linguistically dangerous. There's only so much the caller can do.)

\syhlines{b2n,g2s,g3n,b3s}	\syhDBDs{b4e,g1w,g4e,b1w}

before 3/4 Flip and Trade	after