| ...|... | - | Try sub-patterns in alternation. |
| * | yes | Match 0 or more times. |
| + | yes | Match 1 or more times. |
| ? | yes | Match 0 or 1 times. |
| {n} | no | Match exactly n times. |
| {n,} | yes | Match at least n times. |
| {n,m} | yes | Match at least n times but no more than m times. |
| *? | no | Match 0 or more times. |
| +? | no | Match 1 or more times. |
| ?? | no | Match 0 or 1 times. |
| {n,}? | no | Match at least n times. |
| {n,m}? | no | Match at least n times but no more than m times. |
| {MACRO} | - | Include the regex MACRO in the current regex. |