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A regular expression is a pattern in the form of a string that describes or matches the format of expected results, according to certain rules. Below is a basic introduction to regular expressions and some patterns that are possible. ImageGear uses regular expressions to define the expected format of recognized text.

This section provides the following information:

• Basic Patterns (Literals)
• Sub-Matches
• Repetition Operators
• Character Classes
• • Square Bracket Character Classes
  • Backslash Character Classes
• More Examples

 

 

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