Special Characters to Escape
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Special characters must be escaped only if they have special meaning in the context in which they are being used. For example, the asterisk (*) is a special character only in the "Include" and "Exclude" attributes of an item definition, or in a call to CreateItem. In all other cases, the asterisk is treated as a literal asterisk. While you do not need to escape asterisks everywhere in project files, doing so does no harm.
Use the notation %xx in place of the special character, where xx represents the hexadecimal value of the ASCII character. For example, to use an asterisk (*) as a literal character, use the value
The full list of special characters to escape follows:
|%||Percent sign, used to reference metadata.|
|$||Dollar sign, used to reference properties.|
|@||At sign, used to reference item lists.|
|(||Open parenthesis, used in lists.|
|)||Close parenthesis, used in lists.|
|`||Apostrophe (or tick mark), used in conditions and other expressions.|
|;||Semicolon, a list separator.|
|?||Question mark, a wildcard character when describing a file spec in an item's Include/Exclude section.|
|*||Asterisk, a wildcard character when describing a file spec in an item's Include/Exclude section.|