PDF Creator does not only use standard types like double, int and so on, but also defines some custom types. Please take a look at used types listed below.

	HRESULT	Return value of COM functions and methods.
	TxAnnotationType	An annotation associates an object (such as a note, sound, or movie) with a location on a page of a PDF document or provides a way to interact with the user by means of the mouse and keyboard.
	TxColorSpaceType	In a PDF file, colors of graphic objects can be described in a device-independent way by using color spaces [One word or two?].
	TxCompressionType	This compression type allows you to enable or disable compression in a PDF document.
	TxCryptoKeyLength	The encryption key length type allows you to specify the key length for PDF document encryption.
	TxFontCharset	This type allows you to specify the character set for the font.
	TxFontEmbeddingType	Specifies the way how all used fonts are to be stored in PDF document.
	TxHorJust	This type specifies horizontal justification.
	TxImageCompressionType	This type allows you to specify how an image is to be stored in a PDF document.
	TxPageLayout	This type specifies the page layout to be used when the document is opened.
	TxPageMode	This type specifies which page mode to display in the viewer.
	TxPDFLineCap	The line cap style type specifies the shape to be used at the ends of open sub-paths (and dashes, if any) when they are stroked.
	TxPDFLineJoin	The line join style type specifies the shape to be used at the corners of paths that are stroked.
	TxPDFPageOrientation	This type specifies the orientation of the PDF document page.
	TxPDFPageRotate	This type specifies the rotation to be applied to the page.
	TxPDFPageSize	This type allows you to specify page size using one of the predefined values (ISO paper sizes).
	TxPDFSubmitType	This type specifies how data in forms is submitted.
	TxPDFVersion	Different PDF document versions may differ by internal structure and format.
	TxTextAnnotationIcon	This type specifies the icon used for text annotations.
	TxTextRenderingMode	This type specifies the text rendering mode.
	TxVertJust	This type specifies vertical justification.
	TxZoomLevel	This type specifies the PDF document page zoom level.