The <named> element. The <named> element describes a script's named arguments (i.e., command-line arguments that start with a / character). This element doesn't have a closing tag and requires the name and helpstring attributes to provide a name and description for the named argument. If you include required= "true", the argument won't appear in square brackets in the usage message.
The type attribute is optional and indicates the argument's data type; it can be "string", "boolean", or "simple" (The default is "simple".) The type attribute affects the display of the usage message: If you use type="string", the argument will be appended with a colon (:) and the string value to indicate that a value is required. If you use type="boolean", the argument is appended with the string [+|-] to indicate that the user should type a plus (+) or minus (-) character after the argument name. If you use type="simple" (or omit the type attribute), the argument is displayed as is. . . .
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