What does the squiggly arrow mean? Does it pertain to the notes immediately following it, or notes throughout the entire measure? Thanks

The squiggly bit shows that it is a broken chord, so you play the three notes one after the other in very short succession like an arpeggio. It only applies to the chord that it comes directly before, the first one in this case. The arrow just denotes the direction you break the chord in. Pointing upwards would mean you start on the F, follow it with the D and finish on the top F. An arrow pointing down would mean play it the opposite way around. No arrow usually means play it from bottom to top.

Thanks for good explanation.

In the context of what's pictured, the first
chord only would be "rolled" from the lowest
note to the highest (F~D~F), with the high
F played simultaneously with F in the bass.
That's the standard way of playing such
rolled chords. However, this would be the
most plain vanilla kind of playing. A
notated rolled chord like this actually
gives the player a lot of freedom in
how to play it, and you could "roll"
the notes in just about any manner you
want, in order to give variety to your
playing (for example, you might play
the bass F and then roll the chord
immediately afterwards, and so forth)--in
fact, I believe that composers deliberately
put in rolled chords in situations where
the player is expected to "improvise" a little to
give pizazz to his playing (you sometimes hear
concert pianists doing this in commercial
recordings).