Allows a file to be opened to contain a log of the program until the CLOSE LOG command is issued, or the program is terminated. The user is prompted for the name of file to be created to contain the log. The log file contains all the input and output as seen on the screen. Producing log files can be particularly useful if problems are encountered, or bugs are suspected. The log file can be an invaluable record of the analysis that a set of data has undergone.
After the CLOSE LOG command or the program has been exited the log file may be edited and the useful information extracted for many purposes e.g. tables of figures may be entered to a spread-sheet program for further manipulation and display.
(The OPEN LOG command cannot be used for ``replaying'' an analysis, but this can be achieved by creating a macro, see Section 19, Page .)