This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 12]

CNanoXLSX.Extensions.FormattedTextBuilder	Builder for creating formatted text entries with a fluent API
CIFormattableText
CNanoXLSX.FormattedText	Represents a formatted text entry in Excel shared strings, supporting rich text with multiple runs and inline styles
CNanoXLSX.Extensions.InlineStyleBuilder	Builder for creating inline Styles.Font styles with a fluent API
CNanoXLSX.Extensions.PhoneticProperties	Represents phonetic properties, applied to the phonetic runs of a formatted text
CNanoXLSX.Extensions.PhoneticRun	Represents a phonetic run that provides pronunciation guidance for text
CNanoXLSX.Extensions.TextRun	Represents a single text run with optional inline formatting
CNanoXLSX.WorksheetExtensions	Writer extension methods for the Worksheet class