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001165 respectively, correspond to the template's rows and columns. The columns are as follows: 1. graph number 2. type of graph: 1 line; 2 bar; 3 histogram 3. type of x-axis: corresponding to water year, calendar year, etc. 4. parameter group: output, input, etc. 5. reservoir: ordered by topological ordering, as in setupjile 6. parameter number: ordered as in setupjile 7. beginning month of the time series 8. beginning year of the time series 9. ending month of the time series 1O.ending year of the time series Once the descriptions of the graphs appear in the template, the user can DRAW these graphs. Several routines are required to "get" the appropriate data. For instance, when plotting an INPUT parameter, the values are held in virtual memory. However, the histori- cal part of the INPUT parameter (graphed in black) must be extracted from the OUTPUT parameters. Therefore, if the model has not been RUN, the black line appears as zero val- ues. To fill these values after a run has been made, the data are grabbed from the correct page and column of the output, retreived from a file, and converted into numerical form. When the SELECT SCRIPT button is selected, the scripts are listed to a file sinnilarly to the files procedure above, which creates a file scr/ptlist containing all of the script files which exist for the selected main file. Thus, the command "Is -I scr/pt/* > scr/ptUst" is called. Then, this listing must be parsed, so that the prefix of the filename (e.g. APR90) is the suffix on the script file (e.g. test.APR90). This insures that the script files are unique to the selected main file. 1.4 IMAGE module This module displays a map of the Colorado River Basin. Because it requires a large amount of screen space, calling this module requires the deletion or removal of whatever menus or graphs were previously on the screen. The vector image files are read from the directory mapdata, these files containing the x and y coordinates for the area. Also, the physical characteristics of the various reservoirs can be accessed by bringing up the map, then by passing the mouse over a reservoir, the name of that reservoir will appear. By clicking on a reservoir, the physical characteristics will be listed. This information is re- trieved again from the directory mapdata, with each reservoir having a corresponding file. . Here the user can edit the files areajile, Unejile, and po/ntfile by using a system editor (e.g. vi ) and change the contents without having to recompile the 24MSI. 1.5 User customization 24 Month Study Proiect Docnmentation Volume II 618/91 5