C# Definition:

/// <summary>
/// Standard property id definitions, from OLE2 documentation.  
/// </summary>
enum PROPID
{
        PID_UNKNOWN = -1,
        // integer count + array of entries
        PID_DICTIONARY = 0,
        /// <summary>
        /// Document Code Page, short integer
        /// </summary>
        PID_CODEPAGE = 1,
        /// <summary>
        /// Document title, string
        /// </summary>
        PID_TITLE = 2,
        /// <summary>
        /// Subject, string
        /// </summary>
        PID_SUBJECT = 3,
        /// <summary>
        /// Author, string
        /// </summary>
        PID_AUTHOR = 4,
        /// <summary>
        /// Keywords, string
        /// </summary>
        PID_KEYWORDS = 5,
        /// <summary>
        /// Comments, string
        /// </summary>
        PID_COMMENTS = 6,
        /// <summary>
        /// Template name, string
        /// </summary>
        PID_TEMPLATE = 7,
        /// <summary>
        /// Last Author, string
        /// </summary>
        PID_LASTAUTHOR = 8,
        /// <summary>
        ///  Revision Number, string
        /// </summary>
        PID_REVNUMBER = 9,
        /// <summary>
        /// Edit Date Time, DateTime
        /// </summary>
        PID_EDITTIME = 10,
        /// <summary>
        /// Last Printed, DateTime
        /// </summary>
        PID_LASTPRINTED = 11,
        /// <summary>
        /// Create date time, DateTime
        /// </summary>
        PID_CREATE_DTM = 12,
        /// <summary>
        /// Last save date time, DateTime
        /// </summary>
        PID_LASTSAVE_DTM = 13,
        /// <summary>
        /// Page count, integer
        /// </summary>
        PID_PAGECOUNT = 14,
        /// <summary>
        /// Word count, integer
        /// </summary>
        PID_WORDCOUNT = 15,
        /// <summary>
        ///  Character count, integer
        /// </summary>
        PID_CHARCOUNT = 16,
        /// <summary>
        /// Thumbnail, clipboard format + metafile/bitmap (not supported)
        /// </summary>
        PID_THUMBNAIL = 17,
        /// <summary>
        /// App used for creation, string
        /// </summary>
        PID_APPNAME = 18,
        /// <summary>
        /// Security, integer
        /// </summary>
        PID_SECURITY = 19
}

VB Definition:

Enum PROPID
   TODO
End Enum

Notes:

None.