Book - Page [0x66]

Books - Page (Variable # of bytes)
BYTE cmd
BYTE[2] blockSize
BYTE[4] bookID
BYTE[2] # of pages in this packet (when requesting always requests 1)
For each page:
        BYTE[2] page number
        BYTE[2] number of lines on page
                Server -> (-1 = no lines)
                Client -> (-1 = request page)   (No longer used)
                Client -> (> 0 = write page)
        Repeated for each line:
                BYTE[var] null terminated line

Note: Number of lines on page is always -1 for page requests