Single
A single Pseudo instance. Not a composite.
''(Note: Not may have a nested value but is not a composite.''
class Custom
object Active
object Checked
object Disabled
object Empty
object Enabled
object FirstChild
object FirstOfType
object Focus
object Hover
object InRange
object Invalid
class Lang
object LastChild
object LastOfType
object Link
class Not
class NthChildBase
class NthChild
class NthLastChild
class NthLastOfType
class NthOfType
object OnlyOfType
object OnlyChild
object Optional
object OutOfRange
object ReadOnly
object ReadWrite
object Required
object Target
object Valid
object Visited
object After
object Before
object FirstLetter
object FirstLine
object Selection
class AttrExists
class AttrSelector