iLink Expression Filter Elements 
The following elements can be used in the iLink Smart Fields properties editor to filter text being extracted for use in DocuPhase. Tell me more...
| Element | Definition |
|---|---|
| ^ | Start of a string (e.g., "Sample").
EXAMPLE^Sample$ |
| $ | End of a string. |
| . | Any character (except \n newline) |
| {…} | Explicit quantifier notation. |
| […] | Explicit set of characters to match. |
| (…) | Logical Grouping of part of an expression. |
| * | 0 or more of previous expression. |
| + | 1 or more of previous expression. |
| ? | 0 or 1 of previous expression; also forces minimal matching when an expression might match several strings within a search string. |
| \ | When used with one of the elements listed above, it makes it a literal character rather than a special character; while used with the elements listed below, it makes it a special rather than a literal character. |
| \w | Matches any word character, equivalent to [a-zA-Z0-9] |
| \W | Matches any non-word character, equivalent to [^a-zA-Z0-9] |
| \s | Matches any white space character, equivalent to [\f\n\r\v] |
| \S | Matches any non-white space characters, equivalent to [^\f\n\r\v] |
| \d | Matches any decimal digits, equivalent to [0-9] |
| \D | Matches any non-digit characters, equivalent to [^0-9] |
| \a | Matches a bell (alarm) \u0007 |
| \b | Matches a backspace \u0008 if in a [] character class; otherwise, see the note following this table. |
| \t | Matches a tab \u0009 |
| \r | Matches a carriage return \u000D |
| \v | Matches a vertical tab \u000B |
| \f | Matches a form feed \u000C |
| \n | Matches a new line \u000A |
| \e | Matches an escape \u001B |
