Represents a CHP fkp. The style properties for paragraph and character runs
are stored in fkps. There are PAP fkps for paragraph properties and CHP fkps
for character run properties. The first part of the fkp for both CHP and PAP
fkps consists of an array of 4 byte int offsets that represent a
Paragraph's or Character run's text offset in the main stream. The ending
offset is the next value in the array. For example, if an fkp has X number of
Paragraph's stored in it then there are (x + 1) 4 byte ints in the beginning
array. The number X is determined by the last byte in a 512 byte fkp.
CHP and PAP fkps also store the compressed styles(grpprl) that correspond to
the offsets on the front of the fkp. The offset of the grpprls is determined
differently for CHP fkps and PAP fkps.