.*any character (except for line terminators), repeated any number of times
Copyright the literal text Copyright (case sensitive) .any character (except for line terminators)
the literal (3210 / 408 / 2016)
\d{4}a digit, repeated exactly 4 times
the literal (3210 / 408 / 2016)
b?optionally matches the literal b (9810 / 1428 / 6216) (case sensitive)
y?optionally matches the literal y (12110 / 1718 / 7916) (case sensitive)
?optionally matches the literal (3210 / 408 / 2016)
.*any character (except for line terminators), repeated any number of times
\.the literal . (4610 / 568 / 2E16)