Character Description
* Matches zero or more instances of the string preceding it
+ Matches one or more instances of the string preceding it
? Matches zero or one instances of the string preceding it
. Matches any single character
[xyz] Matches any of x, y, or z (the characters within the brackets)
[A-Z] Matches any uppercase letter
[a-z] Matches any lowercase letter
[0-9] Matches any digit
^ Anchors the match from the beginning
$ Anchors the match to the end
| Separates strings in the regular expression
{n,m} String must occur at least n times, but no more than n
{n} String must occur exactly n times
{n,| String must occur at least n times
|