Mode Modifiers

I'm always forgetting these things:

    .Singleline == s
    .Multiline == m
    .IgnorePatternWhitespace == x
    .IgnoreCase == i
    .ExplicitCapture == n
    .ECMAScript
    .RightToLeft
    .Compiled

shorthand can be used as (?s)...(?-s) or, (?smnxi)