This is sent by the server to display book contents, and by the client to edit book contents.

Offset Type     Name             Description
------ -------- ---------------- ------------------------------
 0000  BYTE     cmd
 0001  USHORT   blockSize        the size of the packet
 0003  UINT     bookID           the book's serial
 0007  USHORT   pages            the number of pages being sent
 0009  for (pages)
       {
       USHORT   pageno           page number (1-based)
       SHORT    lines            number of lines on page(*)
       for (lines)
       {
       CHAR[]   text             null terminated
       }
       }

Notes

• Number of lines on page is always -1 for page requests
• Server → (-1 = no lines)
• Client → (-1 = request page) (No longer used)
• Client → (> 0 = write page)