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bf 1
( c 1 ,
B )
.
bf m 1
( c m 1 ,
B )
. . .
bf m
c m ,
bf mn.. 1
( c mn.. 1 ,
B )
.
bf mn..r
( c mn..r ,
B )
An example is the following:
Example 1. Consider an overall budget for a software project involving devel-
opment. Sub-figures are displayed indented according to their general figures;
thereby, indicating the hierarchical structure of the budget break down.
Pre-investigation 213000
Use cases 120000
Domain analysis 35000
Requirements acquisition 58000
Design 160000
Server enhancements 30000
GUI 65000
Web access 45000
Integration 20000
Programming 920000
Server enhancements 230000
GUI 400000
Web access 180000
Web services 50000
Framework 60000
Finalizing 910000
Verification 230000
Server enhancements 70000
GUI 50000
Web & Framework 110000
Testing 680000
Usability 340000
Automatic testing 140000
Internal system testing 200000
Figure 1 displays a few examples of meet and join of budgets. In the diamond struc-
tures, the upper node is the join of the two nodes in the middle, and the bottom
 
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