Note that you can put a newline after the sigil most of the time as well, except for many of the punctuation variables - the parser accepts spaces after the sigil, but not newlines.
I've known for this quite some time, and I tried to make a JAPH with no line being more than one character wide 1. I haven't succeeded. A quicky attempt I just made (my original tries have been lost in time), run with 'perl -M5.010':
$
_
=
q
q
J
u
s
t
a
n
o
t
h
e
r
P
e
r
l
H
a
c
k
e
r
q
;
s
s
s
seg&say
(None of the lines above match
/^$/)
1
To avoid having to write I have this amazing JAPH, but the margin isn't wide enough for it...