Operators (not all of these are defined initially):
<> ..
< <= == > >=
not, is, is not
* / ** // << >>
+ ++ - --
! ? !! ??
& && | ||
# %
and, or, and then, or else
Underscore in numbers and ids: internal only
Non-operators:
: ; ,
(...) [...] {...} "..." `...` maybe '^'
' . , <-, ->