### Formatted Disk Page for CHPXs (CHPX FKP)

offset (base 10) | field | type | size | bitfield | comments
0 |  | rgfc | array of FCs |  | Each FC is the limit FC of a run of exception text.
4*(fkp.crun+1) | rgb | array of bytes |  |  | an array of bytes where each byte is the word offset of a CHPX. If the byte stored is 0, there is no difference between run's character properties and the style's character properties.
5*fkp.crun+4 |  | unused space |  |  | As new runs/paragraphs are recorded in the FKP, unused space is reduced by 5 if CHPX is already recorded and is reduced by 5+sizeof(CHPX) if property is not already recorded.
511-sizeof(grpchpx) | grpchpx | array of bytes |  |  | grpchpx consists of all of the CHPXs stored in FKP concatenated end to end. Each CHPX is prefixed with a count of bytes which records its length.
511 |  | crun | byte |  | count of runs for CHPX FKP,

The CHP is never stored in a Word file. It is derived by expanding stored CHPXs.

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