Stylesheet File Format
The style sheet (STSH) is stored in the file in two parts, a STSHI and then an array of STDs. The STSHI contains general information about the following stylesheet, including how many styles are in it. After the STSHI, each style is written as an STD. Both the STSHI and each STD are preceded by a ushort that indicates their length.
    Field    Size    Comment
    cbStshi    2 bytes    size of the following STSHI structure
    STSHI    (cbStshi)    Stylesheet Information
    Then for each style in the stylesheet (stshi.cstd), the following is stored:
    cbStd    2 bytes    size of the following STD structure
    STD    (cbStd)    the style description