shown in white against a gray background to denote that it is active when block 75 is selected and executed a screen will come up for entering data to initiate a new job folder or open an existing job folder the screen display 74 is shown when the tab 34 setup job 34 80 is selected the second process block 78 in fig1 is linked to the cost basis data structures similar to area 56 56a in the pyramid navigation screen displays 31 31a the next process block 79 in fig1 is linked to data structures similar to the bid item list 48 48a in the pyramid navigation screen displays 31 31a referring next to fig1 a second screen display 83 in the series of fig1 20 is activated by selecting the next tab 84 for 34 analyze work 34 the next process block 85 with a sequence number 34 4 34 is linked to data structures similar to the wbs setup area 51 51a in the pyramid navigation screen displays 30 30a referring next to fig1 a third screen display 86 in the series of fig5 13 is activated by selecting the next tab 88 for 34 estimate work plan 34 the next.