$Id: file-format.txt,v 1.1 2005/04/19 19:45:23 josheli Exp $

Here is a breakdown of a Variable-Length Multi-Byte Function, in 
this case it is the "Center Current Page Top to Bottom" function.

Function Definition from Corel SDK for WP9
------------------------------------------
Center Current Page Top to Bottom
<209 (0xD1)> <4 (0x04)> [size = variable] <flags = 0>
[size of non-deletable information = 1]
<new center current page state>
  bit 0: 0 = off, 1 = center current page
  bits 1-7: undefined
<undocumented deletable data> x ?
[size] <0xD1>

Hex representation in the actual document:
-----------------------------------------
D1 04 0C 00 00 01 00 01 00 0C 00 D1

Breakdown:
---------
D1   -> Function Group (0xD1 or 209 are the Page Group functions)

04   -> Sub-Function (i.e. "Center Current Page Top to Bottom" function)

0C00 -> Size of this function (i.e. 12 bytes)

00   -> Flags (i.e. none)

0100 -> size of non-deletable (i.e. undocumented) data

01   -> Page state (i.e. 1 = "center current page)

00   -> Undocumented deletable data

0C00 -> Size of this function again (i.e. 12 bytes)

D1   -> Function Group again