diff --git a/BurnOutSharp.Models/CFB/Constants.cs b/BurnOutSharp.Models/CFB/Constants.cs
index 4f6b9435..9983a772 100644
--- a/BurnOutSharp.Models/CFB/Constants.cs
+++ b/BurnOutSharp.Models/CFB/Constants.cs
@@ -8,15 +8,45 @@ namespace BurnOutSharp.Models.CFB
     
         public const ulong SignatureUInt64 = 0xE11AB1A1E011CFD0;
 
+        
+        /// <see href="https://devblogs.microsoft.com/setup/identifying-windows-installer-file-types/"/>
         #region Class IDs
 
-        // <remarks>Shares a value with Merge Module and Patch Creation Properties</remarks>
+        /// <summary>
+        /// Installer Package (msi), Merge Module (msm), Patch Creation Properties (pcp)
+        /// </summary>
         public static readonly Guid InstallerPackage = new Guid("000c1084-0000-0000-c000-000000000046");
 
+        /// <summary>
+        /// Patch Package (msp)
+        /// </summary>
         public static readonly Guid PatchPackage = new Guid("000C1086-0000-0000-C000-000000000046");
 
+        /// <summary>
+        /// Transform (mst)
+        /// </summary>
         public static readonly Guid Transform = new Guid("000C1082-0000-0000-C000-000000000046");
 
         #endregion
+
+        /// <see href="https://learn.microsoft.com/en-us/windows/win32/stg/predefined-property-set-format-identifiers"/>
+        #region Property Set Format IDs
+
+        /// <summary>
+        /// The Summary Information Property Set
+        /// </summary>
+        public static readonly Guid FMTID_SummaryInformation = new Guid("F29F85E0-4FF9-1068-AB91-08002B27B3D9");
+        
+        /// <summary>
+        /// The DocumentSummaryInformation and UserDefined Property Sets
+        /// </summary>
+        public static readonly Guid FMTID_DocSummaryInformation = new Guid("D5CDD502-2E9C-101B-9397-08002B2CF9AE");
+        
+        /// <summary>
+        /// The DocumentSummaryInformation and UserDefined Property Sets
+        /// </summary>
+        public static readonly Guid FMTID_UserDefinedProperties = new Guid("D5CDD505-2E9C-101B-9397-08002B2CF9AE");
+
+        #endregion
     }
 }
\ No newline at end of file
diff --git a/BurnOutSharp.Models/CFB/Enums.cs b/BurnOutSharp.Models/CFB/Enums.cs
index 8b10211c..b46cc1ad 100644
--- a/BurnOutSharp.Models/CFB/Enums.cs
+++ b/BurnOutSharp.Models/CFB/Enums.cs
@@ -5,7 +5,7 @@ namespace BurnOutSharp.Models.CFB
         Red = 0x00,
         Black = 0x01,
     }
-    
+
     public enum ObjectType : byte
     {
         Unknown = 0x00,
@@ -69,4 +69,406 @@ namespace BurnOutSharp.Models.CFB
         /// </summary>
         NOSTREAM = 0xFFFFFFFF,
     }
+
+    /// <see href="https://learn.microsoft.com/en-us/windows/win32/stg/the-summary-information-property-set"/>
+    public enum SummaryInformationProperty : uint
+    {
+        /// <summary>
+        /// Title
+        /// </summary>
+        PIDSI_TITLE = 0x00000002,
+
+        /// <summary>
+        /// Subject
+        /// </summary>
+        PIDSI_SUBJECT = 0x00000003,
+
+        /// <summary>
+        /// Author
+        /// </summary>
+        PIDSI_AUTHOR = 0x00000004,
+
+        /// <summary>
+        /// Keywords
+        /// </summary>
+        PIDSI_KEYWORDS = 0x00000005,
+
+        /// <summary>
+        /// Comments
+        /// </summary>
+        PIDSI_COMMENTS = 0x00000006,
+
+        /// <summary>
+        /// Template
+        /// </summary>
+        PIDSI_TEMPLATE = 0x00000007,
+
+        /// <summary>
+        /// Last Saved By
+        /// </summary>
+        PIDSI_LASTAUTHOR = 0x00000008,
+
+        /// <summary>
+        /// Revision Number
+        /// </summary>
+        PIDSI_REVNUMBER = 0x00000009,
+
+        /// <summary>
+        /// Total Editing Time
+        /// </summary>
+        PIDSI_EDITTIME = 0x0000000A,
+
+        /// <summary>
+        /// Last Printed
+        /// </summary>
+        PIDSI_LASTPRINTED = 0x0000000B,
+
+        /// <summary>
+        /// Create Time/Date
+        /// </summary>
+        PIDSI_CREATE_DTM = 0x0000000C,
+
+        /// <summary>
+        /// Last saved Time/Date
+        /// </summary>
+        PIDSI_LASTSAVE_DTM = 0x0000000D,
+
+        /// <summary>
+        /// Number of Pages
+        /// </summary>
+        PIDSI_PAGECOUNT = 0x0000000E,
+
+        /// <summary>
+        /// Number of Words
+        /// </summary>
+        PIDSI_WORDCOUNT = 0x0000000F,
+
+        /// <summary>
+        /// Number of Characters
+        /// </summary>
+        PIDSI_CHARCOUNT = 0x00000010,
+
+        /// <summary>
+        /// Thumbnail
+        /// </summary>
+        PIDSI_THUMBNAIL = 0x00000011,
+
+        /// <summary>
+        /// Name of Creating Application
+        /// </summary>
+        PIDSI_APPNAME = 0x00000012,
+
+        /// <summary>
+        /// Security
+        /// </summary>
+        PIDSI_SECURITY = 0x00000013,
+    }
+
+    /// <remarks>Also includes the DocumentSummaryInformation set</remarks>
+    /// <see href="https://learn.microsoft.com/en-us/windows/win32/stg/the-documentsummaryinformation-and-userdefined-property-sets"/>
+    public enum UserDefinedProperty : uint
+    {
+        /// <summary>
+        /// Category - A text string typed by the user that indicates what
+        /// category the file belongs to (memo, proposal, and so on). It
+        /// is useful for finding files of same type.
+        /// </summary>
+        PIDDSI_CATEGORY = 0x00000002,
+
+        /// <summary>
+        /// PresentationTarget - Target format for presentation (35mm,
+        /// printer, video, and so on).
+        /// </summary>
+        PIDDSI_PRESFORMAT = 0x00000003,
+
+        /// <summary>
+        /// Bytes - Number of bytes.
+        /// </summary>
+        PIDDSI_BYTECOUNT = 0x00000004,
+
+        /// <summary>
+        /// Lines - Number of lines.
+        /// </summary>
+        PIDDSI_LINECOUNT = 0x00000005,
+
+        /// <summary>
+        /// Paragraphs - Number of paragraphs.
+        /// </summary>
+        PIDDSI_PARCOUNT = 0x00000006,
+
+        /// <summary>
+        /// Slides - Number of slides.
+        /// </summary>
+        PIDDSI_SLIDECOUNT = 0x00000007,
+
+        /// <summary>
+        /// Notes - Number of pages that contain notes.
+        /// </summary>
+        PIDDSI_NOTECOUNT = 0x00000008,
+
+        /// <summary>
+        /// HiddenSlides - Number of slides that are hidden.
+        /// </summary>
+        PIDDSI_HIDDENCOUNT = 0x00000009,
+
+        /// <summary>
+        /// MMClips - Number of sound or video clips.
+        /// </summary>
+        PIDDSI_MMCLIPCOUNT = 0x0000000A,
+
+        /// <summary>
+        /// ScaleCrop - Set to True (-1) when scaling of the thumbnail
+
+        /// is desired. If not set, cropping is desired.
+        /// </summary>
+        PIDDSI_SCALE = 0x0000000B,
+
+        /// <summary>
+        /// HeadingPairs - Internally used property indicating the
+        /// grouping of different document parts and the number of
+        /// items in each group. The titles of the document parts are
+        /// stored in the TitlesofParts property. The HeadingPairs
+        /// property is stored as a vector of variants, in repeating
+        /// pairs of VT_LPSTR (or VT_LPWSTR) and VT_I4 values. The
+        /// VT_LPSTR value represents a heading name, and the VT_I4
+        /// value indicates the count of document parts under that heading.
+        /// </summary>
+        PIDDSI_HEADINGPAIR = 0x0000000C,
+
+        /// <summary>
+        /// TitlesofParts - Names of document parts.
+        /// </summary>
+        PIDDSI_DOCPARTS = 0x0000000D,
+
+        /// <summary>
+        /// Manager - Manager of the project.
+        /// </summary>
+        PIDDSI_MANAGER = 0x0000000E,
+
+        /// <summary>
+        /// Company - Company name.
+        /// </summary>
+        PIDDSI_COMPANY = 0x0000000F,
+
+        /// <summary>
+        /// LinksUpToDate - Boolean value to indicate whether the custom
+        /// links are hampered by excessive noise, for all applications.
+        /// </summary>
+        PIDDSI_LINKSDIRTY = 0x00000010,
+    }
+
+    /// <see href="https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-oaut/3fe7db9f-5803-4dc4-9d14-5425d3f5461f"/>
+    public enum VariantType : ushort
+    {
+        /// <summary>
+        /// The type of the contained field is undefined. When this flag is
+        /// specified, the VARIANT MUST NOT contain a data field.
+        /// </summary>
+        VT_EMPTY = 0x0000,
+
+        /// <summary>
+        /// The type of the contained field is NULL. When this flag is
+        /// specified, the VARIANT MUST NOT contain a data field.
+        /// </summary>
+        VT_NULL = 0x0001,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a 2-byte signed integer.
+        /// </summary>
+        VT_I2 = 0x0002,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a 4-byte signed integer.
+        /// </summary>
+        VT_I4 = 0x0003,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a 4-byte IEEE floating-point number.
+        /// </summary>
+        VT_R4 = 0x0004,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be an 8-byte IEEE floating-point number.
+        /// </summary>
+        VT_R8 = 0x0005,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be CURRENCY.
+        /// </summary>
+        VT_CY = 0x0006,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be DATE.
+        /// </summary>
+        VT_DATE = 0x0007,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be BSTR.
+        /// </summary>
+        VT_BSTR = 0x0008,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a pointer to IDispatch.
+        /// </summary>
+        VT_DISPATCH = 0x0009,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be HRESULT.
+        /// </summary>
+        VT_ERROR = 0x000A,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be VARIANT_BOOL.
+        /// </summary>
+        VT_BOOL = 0x000B,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be VARIANT. It MUST appear with the bit flag VT_BYREF.
+        /// </summary>
+        VT_VARIANT = 0x000C,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a pointer to IUnknown.
+        /// </summary>
+        VT_UNKNOWN = 0x000D,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be DECIMAL.
+        /// </summary>
+        VT_DECIMAL = 0x000E,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a 1-byte integer.
+        /// </summary>
+        VT_I1 = 0x0010,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a 1-byte unsigned integer.
+        /// </summary>
+        VT_UI1 = 0x0011,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a 2-byte unsigned integer.
+        /// </summary>
+        VT_UI2 = 0x0012,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a 4-byte unsigned integer.
+        /// </summary>
+        VT_UI4 = 0x0013,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be an 8-byte signed integer.
+        /// </summary>
+        VT_I8 = 0x0014,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be an 8-byte unsigned integer.
+        /// </summary>
+        VT_UI8 = 0x0015,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a 4-byte signed integer.
+        /// </summary>
+        VT_INT = 0x0016,
+
+        /// <summary>
+        /// Either the specified type, or the type of the element or contained
+        /// field MUST be a 4-byte unsigned integer.
+        /// </summary>
+        VT_UINT = 0x0017,
+
+        /// <summary>
+        /// The specified type MUST be void.
+        /// </summary>
+        VT_VOID = 0x0018,
+
+        /// <summary>
+        /// The specified type MUST be HRESULT.
+        /// </summary>
+        VT_HRESULT = 0x0019,
+
+        /// <summary>
+        /// The specified type MUST be a unique pointer.
+        /// </summary>
+        VT_PTR = 0x001A,
+
+        /// <summary>
+        /// The specified type MUST be SAFEARRAY.
+        /// </summary>
+        VT_SAFEARRAY = 0x001B,
+
+        /// <summary>
+        /// The specified type MUST be a fixed-size array.
+        /// </summary>
+        VT_CARRAY = 0x001C,
+
+        /// <summary>
+        /// The specified type MUST be user defined.
+        /// </summary>
+        VT_USERDEFINED = 0x001D,
+
+        /// <summary>
+        /// The specified type MUST be a NULL-terminated string.
+        /// </summary>
+        VT_LPSTR = 0x001E,
+
+        /// <summary>
+        /// The specified type MUST be a zero-terminated string of
+        /// UNICODE characters.
+        /// </summary>
+        VT_LPWSTR = 0x001F,
+
+        /// <summary>
+        /// The type of the element or contained field MUST be a BRECORD.
+        /// </summary>
+        VT_RECORD = 0x0024,
+
+        /// <summary>
+        /// The specified type MUST be either a 4-byte or an 8-byte signed
+        /// integer. The size of the integer is platform specific and
+        /// determines the system pointer size value.
+        /// </summary>
+        VT_INT_PTR = 0x0025,
+
+        /// <summary>
+        /// The specified type MUST be either a 4 byte or an 8 byte unsigned
+        /// integer. The size of the integer is platform specific and
+        /// determines the system pointer size value
+        /// </summary>
+        VT_UINT_PTR = 0x0026,
+
+        /// <summary>
+        /// The type of the element or contained field MUST be a SAFEARRAY.
+        /// </summary>
+        VT_ARRAY = 0x2000,
+
+        /// <summary>
+        /// The type of the element or contained field MUST be a pointer to
+        /// one of the types listed in the previous rows of this table. If
+        /// present, this bit flag MUST appear in a VARIANT discriminant
+        /// with one of the previous flags.
+        /// </summary>
+        VT_BYREF = 0x4000
+    }
 }
\ No newline at end of file
diff --git a/BurnOutSharp.Models/CFB/FileHeader.cs b/BurnOutSharp.Models/CFB/FileHeader.cs
index a772ed98..05af97ed 100644
--- a/BurnOutSharp.Models/CFB/FileHeader.cs
+++ b/BurnOutSharp.Models/CFB/FileHeader.cs
@@ -6,7 +6,7 @@ namespace BurnOutSharp.Models.CFB
     public sealed class FileHeader
     {
         /// <summary>
-        /// IOdentification signature for the compound file structure, and MUST be
+        /// Iddentification signature for the compound file structure, and MUST be
         /// set to the value 0xD0, 0xCF, 0x11, 0xE0, 0xA1, 0xB1, 0x1A, 0xE1.
         /// </summary>
         public ulong Signature;
diff --git a/BurnOutSharp.Models/CFB/SummaryInformation.cs b/BurnOutSharp.Models/CFB/SummaryInformation.cs
new file mode 100644
index 00000000..8b8edba7
--- /dev/null
+++ b/BurnOutSharp.Models/CFB/SummaryInformation.cs
@@ -0,0 +1,46 @@
+using System;
+
+namespace BurnOutSharp.Models.CFB
+{
+    /// <see href=""/>
+    public sealed class SummaryInformation
+    {
+        /// <summary>
+        /// This field MUST be set to 0xFFFE. This field is a byte order mark for
+        /// all integer fields, specifying little-endian byte order.
+        /// </summary>
+        public ushort ByteOrder;
+
+        /// <summary>
+        /// 26 bytes of unknown data
+        /// </summary>
+        public byte[] Unknown1;
+
+        /// <summary>
+        /// Format ID, should be <see cref="Constants.FMTID_SummaryInformation"/>
+        /// </summary>
+        public Guid FormatID;
+
+        /// <summary>
+        /// 16 bytes of unknown data
+        /// </summary>
+        public byte[] Unknown2;
+
+        /// <summary>
+        /// Location of the section
+        /// </summary>
+        public uint Offset;
+
+        /// <summary>
+        /// Section count(?)
+        /// </summary>
+        public uint SectionCount;
+
+        /// <summary>
+        /// Property count
+        /// </summary>
+        public uint PropertyCount;
+
+        // Followed by an array of variants
+    }
+}
\ No newline at end of file
diff --git a/BurnOutSharp.Models/CFB/Variant.cs b/BurnOutSharp.Models/CFB/Variant.cs
new file mode 100644
index 00000000..94a151fe
--- /dev/null
+++ b/BurnOutSharp.Models/CFB/Variant.cs
@@ -0,0 +1,45 @@
+namespace BurnOutSharp.Models.CFB
+{
+    /// <summary>
+    /// VARIANT is a container for a union that can hold many types of data.
+    /// </summary>
+    /// <see href="https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-oaut/b2ee2b50-665e-43e6-a92c-8f2a29fd7add"/>
+    public sealed class Variant
+    {
+        /// <summary>
+        /// MUST be set to the size, in quad words (64 bits), of the structure.
+        /// </summary>
+        public uint Size;
+
+        /// <summary>
+        /// MUST be set to 0 and MUST be ignored by the recipient.
+        /// </summary>
+        public uint RpcReserved;
+
+        /// <summary>
+        /// MUST be set to one of the values specified with a "V".
+        /// </summary>
+        public VariantType VariantType;
+
+        /// <summary>
+        /// MAY be set to 0 and MUST be ignored by the recipient.
+        /// </summary>
+        public ushort Reserved1;
+
+        /// <summary>
+        /// MAY be set to 0 and MUST be ignored by the recipient.
+        /// </summary>
+        public ushort Reserved2;
+
+        /// <summary>
+        /// MAY be set to 0 and MUST be ignored by the recipient.
+        /// </summary>
+        public ushort Reserved3;
+
+        /// <summary>
+        /// MUST contain an instance of the type, according to the value
+        /// in the <see cref="VariantType"/> field.
+        /// </summary>
+        public object Union;
+    }
+}
\ No newline at end of file