User Manual
× π
•
e
x
→ e
x
•
•
k
'π
'''
!x'ce+!x'
iw
u
'
'''
± a 'b ± d ± a 'b ±
a
'
b
c
±
d
'
e
f
•a b c d e f '
<
a <<b <<c <
<
d <<e <<f <
•'
a c d
'
a
'
b
c
d
'
e
f
→
a
´
'
b
+
d
´
'
e
c
´
c ´c f
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