g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string
u modifier: unicode. Enables Unicode-aware matching and escape syntax
i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters
y modifier: sticky. Matches only at the current search position instead of scanning ahead
s modifier: single line. Allows a dot to match line terminators