1[section Header Organization] 2 3The main header you will always need to use _yap_ is the _alg_header_. If you 4want to ensure that you don't accidentally use _expr_ (which I recommend), 5just include this header and nothing else. 6 7If you want to use the _expr_ reference expression template (great for 8prototyping, but not recommended for production work), include the 9_expr_header_. 10 11If you want to include all of the above, use the _yap_header_. 12 13If you want to use _print_, include the _print_header_; this header is not 14included in the _yap_header_. 15 16[endsect] 17