Required Text. Specifies the content type name. The value can be a reference to a resource in the format $Resources:String. ...

Required Text. Specifies the content type name. The value can be a reference to a resource in the format $Resources:String. The name itself cannot be longer than 128 characters and cannot contain the characters \ / : * ? " # % < > { } | ~ , two consecutive periods (..), or special characters such as a tab. 
An error occurs if another content type with the same name exists in the collection where the content type is added.

Requests queued by users or triggered by the system will be added to the queue but will not start unless the build administrator ... Required assemblies 'WindowsBase', 'PresentationCore', and 'PresentationFramework' are missing from the target framework. ... Required Boolean. If TRUE, the field must have value assigned to it before an item that is created using this content type ... Required if reference element is specified for an Assembly reference. This tag supports both simple text and strong name ... Required Text. Specifies the content type name. The value can be a reference to a resource in the format $Resources:String. ... Required Text. Specifies the field ID of the column that this FieldRef element references. The field ID is the string representation ... Required Text. The displayed name for the column. Maximum length is 255 characters. The value of this attribute is used as ... Required Text. The name of a column. This is the internal name of a column and is guaranteed never to change for the lifetime ... Required Text. The name of a field. This is the internal name of a field and is guaranteed never to change for the lifetime ...