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GOlluS 1.9 Make utility The make utility is a UNIX command/utility which maintains, updates, and regenerates groups of programs. Please refer to the UNIX operating system documentation for de- tailed information about the make utility, or alternatively try the on-line "man" pages doc- umentation. After some part of the source code for the 24MSI is changed (e.g. as a result of an enhancement or bug), the code must be recompiled. Typing the command "make" or "make -fmakefile" at the root directory, which is /home/24month/program/programlgks/ src, will automatically search to find out which files have been edited, which need to be compiled, and then link them to produce the executable code. For instance, if the file BLE- GEND.F was edited, then the time/date stamp is updated as part of saving the file to disk. Make compares this time/date stamp with it's tinle/date stamp. If BLEGEND.F has a later time/date stamp, then this file is recompiled and linked. Additionally, a dependency list can help to automate the process. This list is used when a file is dependent upon another. As an example, many of the *.f files (the source code subroutines and functions) are de- pendent upon common blocks which are stored as files themselves (* .com). Thus, if a common block has changed, the routines and functions that use that common block must also be updated. Hence, make searches this list and compiles and links the appropriate files. This dependency list is in the bottom half of the makefile. 1.10 Printing To get hard copy output of graphics from the 24MSI, the user has a few choices. Seclect- ing the PRINT button when not displaying output data files, the user can print a region of the screen by sending it directly to a printer, save the region to a Postscript file, or if a col- or printer is hooked up, by dumping the image directly to the color printer. The first is accomplished by choosing to print the standard 24MSM text output file, either one page at a time or the entire output file. The routine PRMENU.F copies the working output data file to a local, temporary file to be printed, using the command cp working/ MODEL.OUT printer.tmp. Then the script routine PRTMP which resides in the printer- stuff directory is called. It is in this file that the path and printer name is set, which ar de- pendent upon the local computer network configuration. If the user has selected to print only one of the pages from the output data file, then that page is copied again to the print- er.tmp file, which then is called by PRTMP to be printed. To print the standard out put files, these files are simply routed to the printer using the UNIX command "ipr". Again, all of the script routines to acheive this functionality are located in the directory printerstuff. If the user chooses to print directly to the color printer, the left mouse button should be clicked at the appropriate place in the menu. This will spawn a process which is defined in the file printerstuff/COLORPRT. To get a region of the screen saved to a Postscript file, the user should select the middle mouse button. This will bring up some cross-hairs on the screen so the user can select the lower-left and upper-right corners of the desired screen area. Then a process will be spawned which is defined in the file printerstuff/EPSFILE or printerstu/flEPSF/LES- CALE. The difference between the two is that if the desired region is larger in either the 24 Month Study Proiect Documentation Volume n 618191 9