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          The following character classes are only supported by Unicode Regular Expressions:
          that is those that use the u32regex
          type. The names used are the same as those from Chapter 4 of the Unicode
          standard.
        
| Short Name | Long Name | 
|---|---|
| ASCII | |
| Any | |
| Assigned | |
| C* | Other | 
| Cc | Control | 
| Cf | Format | 
| Cn | Not Assigned | 
| Co | Private Use | 
| Cs | Surrogate | 
| L* | Letter | 
| Ll | Lowercase Letter | 
| Lm | Modifier Letter | 
| Lo | Other Letter | 
| Lt | Titlecase | 
| Lu | Uppercase Letter | 
| M* | Mark | 
| Mc | Spacing Combining Mark | 
| Me | Enclosing Mark | 
| Mn | Non-Spacing Mark | 
| N* | Number | 
| Nd | Decimal Digit Number | 
| Nl | Letter Number | 
| No | Other Number | 
| P* | Punctuation | 
| Pc | Connector Punctuation | 
| Pd | Dash Punctuation | 
| Pe | Close Punctuation | 
| Pf | Final Punctuation | 
| Pi | Initial Punctuation | 
| Po | Other Punctuation | 
| Ps | Open Punctuation | 
| S* | Symbol | 
| Sc | Currency Symbol | 
| Sk | Modifier Symbol | 
| Sm | Math Symbol | 
| So | Other Symbol | 
| Z* | Separator | 
| Zl | Line Separator | 
| Zp | Paragraph Separator | 
| Zs | Space Separator |