"Chord Slash Slash"

Hey guys

i got this song here

http://www.ukemaker.com/ukeclub/media/097-IllFlyAway.pdf

it got these chords "D//" and "A//"

even i cant find other songs with similar chord writing right now i think i have seen it before.

So, what does it mean?

Thanks

The song is in 4/4 time. Most of the chords are getting a full 4 beats per measure. In those measures, the slash is representing the number of beats. So, the D gets 2 beats and then change to A for 2 beats within that measure.