Antimagic Field Questions

[conjectural mage]

Does Antimagic Field block all internal spell line of effect?
and
Can one cast in AMF?
Additionally,
Can one cast any of the spells that "remain unaffected" in an AMF so that they take effect?

By RAW, I believe the first two answers should be yes and yes (remembering that AMF suppresses spells while they are in it).
I am unsure about the last one. Especially since Wall of Force, and Prismatic Wall presumably require line of sight, (unless they can be/are cast at a range of touch?) and Prismatic Sphere I am completely unsure on.

Basically,
If the first two answers are yes, I believe this means one could cast Flesh worm infestation (which has its range of touch) on a target while in AFM
that would then affect them if they left the AMF (before the suppressed spells duration ran out). But, one couldn't cast something like Ray of Enfeeblement on anyone else, as that requires line of effect.

[vhok]

1. you cannot cast spells that need to go through AMF
2. no you cannot use magic in an AMF any magic you cast comes from you originally and no magic works in AMF
3. not sure what your talking about but you cannot cast anything in AMF so going to say no

its all in the very first line of AMF

An invisible barrier surrounds you and moves with you. The space within this barrier is impervious to most magical effects, including spells, spell-like abilities, and supernatural abilities. Likewise, it prevents the functioning of any magic items or spells within its confines.

[blahpers]

Antimagic field is itself a magical effect. Shouldn't it negate itself, thereby rendering the region magic-friendly again?

*gets himself killed on the next zebra crossing*

...On topic, my take after rereading the spell description:

So:

1. Nope. Line of effect isn't affected, though it might be irrelevant in most cases.
2. Yep, but the entire effect is suppressed for the duration per the "spells used within" clause.
3. Yes. Those spells "remain unaffected", so they're unaffected.

I'm not at all certain this is how the spell was intended to work, though.

[blahpers]

And for the record, I don't run it the way I describe above because it's silly. I treat the volume as an oasis of mundanity, where magic and magical effects simply don't exist unless specifically allowed to do so.