% Substitution definitions
% Format:
% <SMARTS> <replacement-string>
% halogens
[#7!-1,#8,#16]              ewg2
[#7!-1,#8!-1,#16!-1,$halogen]     ewg1
[$smallhals,$largehals]     halogen
[#9,#17]                    smallhals
[#35,#53]                   largehals
