| x<sup>+</sup> | _MacroMatch_<sup>+</sup> | 1 or more of x |
| x<sup>a..b</sup> | HEX_DIGIT<sup>1..6</sup> | a to b repetitions of x |
| \| | `u8` \| `u16`, Block \| Item | Either one or another |
-| [ ] | [`b` `B`] | Any of the characters listed |
-| [ - ] | [`a`-`z`] | Any of the characters in the range |
-| ~[ ] | ~[`b` `B`] | Any characters, except those listed |
+| \[ ] | \[`b` `B`] | Any of the characters listed |
+| \[ - ] | \[`a`-`z`] | Any of the characters in the range |
+| ~\[ ] | ~\[`b` `B`] | Any characters, except those listed |
| ~`string` | ~`\n`, ~`*/` | Any characters, except this sequence |
| ( ) | (`,` _Parameter_)<sup>?</sup> | Groups items |