`TPDFScanner`
pt		DoError
pt		ParseHexString
pt		ParseString
pt		DoGetToken
		Create
		Destroy
		CharacterClass
		GetToken
		CopyBytes
		ReadStreamData
		Unget
		Reposition
		CompareBytes
		CompareBytesBackwards
		FindByte
		GetTillByte
		FindByteBackwards
		FindBytes
		FindBytesBackward