[iso646.h.syn]

# 17 Language support library [[support]](./#support)

## 17.15 C headers [[support.c.headers]](support.c.headers#iso646.h.syn)

### 17.15.3 Header <iso646.h> synopsis [iso646.h.syn]

[1](#1)

[#](http://github.com/Eelis/draft/tree/9adde4bc1c62ec234483e63ea3b70a59724c745a/source/support.tex#L6666)

The C++ header [<iso646.h>](#header:%3ciso646.h%3e "17.15.3 Header <iso646.h> synopsis [iso646.h.syn]") is empty[.](#1.sentence-1)

[*Note [1](#note-1)*:

and,and_eq,bitand,bitor,compl,not_eq,not,or,or_eq,xor, andxor_eq are keywords in C++ ([[lex.key]](lex.key "5.12 Keywords"))[.](#1.sentence-2)

— *end note*]