File Shape Address (FSPA) 

 
b10b16fieldtypesizebitfieldcomments
00spidlong  Shape Identifier. Used in conjunction with the office art data (found via fcDggInfo in the FIB) to find the actual data for this shape.
44xaLeftxa  left of rectangle enclosing shape relative to the origin of the shape
88yaTopya  top of rectangle enclosing shape relative to the origin of the shape
12CxaRightxa  right of rectangle enclosing shape relative to the origin of the shape
1610yaBottomya  bottom of the rectangle enclosing shape relative to the origin of the shape
2014fHdruns short:100011 in the undo doc when shape is from the header doc, 0 otherwise (undefined when not in the undo doc)
  bxuns short:20006x position of shape relative to anchor CP
      0 relative to page margin
      1 relative to top of page
      2 relative to text (column for horizontal text; paragraph for vertical text)
      3 reserved for future use
  byuns short:20018y position of shape relative to anchor CP
      0 relative to page margin
      1 relative to top of page
      2 relative to text (paragraph for horizontal text; column for vertical text)
  wruns short:401E0text wrapping mode
      0 like 2, but doesn't require absolute object
      1 no text next to shape
      2 wrap around absolute object
      3 wrap as if no object present
      4 wrap tightly around object
      5 wrap tightly, but allow holes
      6-15 reserved for future use
  wrkuns short:41E00text wrapping mode type (valid only for wrapping modes 2 and 4
      0 wrap both sides
      1 wrap only on left
      2 wrap only on right
      3 wrap only on largest side
  fRcaSimpleuns short:12000when set, temporarily overrides bx, by, forcing the xaLeft, xaRight, yaTop, and yaBottom fields to all be page relative.
  fBelowTextuns short:140001 shape is below text
      0 shape is above text
  fAnchorLockuns short:180001 anchor is locked
      0 anchor is not locked
2216cTxbxlong  count of textboxes in shape (undo doc only)

cbFSPA (count of bytes of FSPA) is 26 (decimal), 1A (hex).