* `|` (`|…| expr`): closures. See [Closures].
* `|=` (`var |= expr`): bitwise or & assignment. Overloadable (`BitOrAssign`).
* `||` (`expr || expr`): logical or.
-* `_`: "ignored" pattern binding. See [Patterns (Ignoring bindings)].
+* `_`: "ignored" pattern binding (see [Patterns (Ignoring bindings)]). Also used to make integer-literals readable (see [Reference (Integer literals)]).
## Other Syntax
[Primitive Types (Tuples)]: primitive-types.html#tuples
[Raw Pointers]: raw-pointers.html
[Reference (Byte String Literals)]: ../reference.html#byte-string-literals
+[Reference (Integer literals)]: ../reference.html#integer-literals
[Reference (Raw Byte String Literals)]: ../reference.html#raw-byte-string-literals
[Reference (Raw String Literals)]: ../reference.html#raw-string-literals
[References and Borrowing]: references-and-borrowing.html