that sounds quite confusing, no i mean fingerpicking, whatever the work for that is "pitzicato?" or something like that i think, bearing in mind that it is a classical guitar...
an arpeggio is the 1st, 3rd, and 5th notes of the scale as far as i know... i guess that is the sirt if "tonic" chord like you were saying though??
Maybe i should just learn to read music off it.