The Microsoft Excel File Format - OpenOffice.org

3.1 Common Formula Structure
3.1.6 Additional Token Data
A few tokens contain additional data that does not follow the token identifier, but is appended to the token array. Its size
is not contained in the leading field containing the token array size. Affected tokens are the tArray token (➜3.8.7), the
tMemArea token (➜3.9.4), and a few subtypes of the the tNlr token (➜3.10.4). The additional data of each token is
appended in the same order the tokens are located in the token array.
Example: The formula ={1}+A1:A2 A2:A3+{2} contains 3 tokens with additional data: 2 tArray tokens
representing the contant arrays, and a tMemArea token containing the result of the intersection operator (the cell
reference A2). The detailed example below applies for BIFF8.
• The RPN representation of the formula is: {1}, A1:A2, A2:A3, “ ”, +, {2}, +.
• Written in Excel token notation, this is (the term A1:A2, A2:A3, “ ” is led by a tMemArea token):
tArrayV({1}), tMemAreaV(A2), tAreaR(A1:A2), tAreaR(A2:A3), tIsect, tAdd, tArrayV({2}), tAdd.
Offset Size Token name Description
0 2 Size of the following formula data (44 bytes), without the additional
data following the last tAdd token
2 8 tArrayV Placeholder for first constant array {1}
10 7 tMemAreaV Constant reference subexpression follows in next 19 bytes (until and
including the tIsect token)
17 9 tAreaR Cell reference A1:A2
26 9 tAreaR Cell reference A2:A3
35 1 tIsect Intersection operator
36 1 tAdd Addition operator
37 8 tArrayV Placeholder for second constant array {2}
45 1 tAdd Addition operator
46 12 Constant value array (➜2.5.8) containing the values of the constant
array {1}: contains width 1, height 1, value 1
58 10 Cell range address list (➜2.5.15) containing the result of the
reference subexpression A1:A2 A2:A3: a one-element list with the
cell address A2
68 12 Constant value array (➜2.5.8) containing the values of the constant
array {2}: contains width 1, height 1, value 2
31