drwxrwsr-x  17 xconsys xcons0   4096 Mar  2 12:55 archive/     [archive directories]
    -rw-rw-r--   1 xconsys xcons0     30 Jun  3  2011 depends.opt  [library dependencies]
    -rw-rwxr--   1 xconsys xcons0     52 Apr 22  2005 options.opt  [build options]
    -rwxrwxr-x   1 xconsys xcons0 200040 Mar  2 12:55 pa1420       [current executable]
    -rw-rw-r--   1 xconsys xcons0  94596 Feb 18  2016 pa1420.cpp   [source file]

-rw-r--r--   1 hendricks controls     160 Feb 18  2016 build_results.txt    [results from last build]
-rw-rw-r--   1 hendricks hendricks     30 Apr 18  2013 depends.opt          [library dependencies]
-rw-r--r--   1 hendricks controls      52 Apr 22  2005 options.opt          [build options]
-rwxrwxr-x   1 hendricks hendricks  94596 Feb 18  2016 pa1420.cpp           [a source file]
-rwxrwxr-x   1 hendricks hendricks    541 Apr 18  2013 pa1420.h             [a header file]
-rwxrwxr-x   1 hendricks hendricks 199844 Feb 18  2016 pa1420               [executable file]

while (TRUE)
    {/* get next interrupt */
    window_intype(&window_id,&int_type,&row,&column,&info);	
    switch (int_type)
        {
        case INTINI:		/* initialization interrupt (event) */
            pgm_ini();
            break;
        case INTTRM:		/* termination interrupt (event) */
            pgm_trm();
            break;
        case INTKBD:		/* keyboard/user interrupt (event) */
            pgm_kbd();
            break;
        case INTPER:		/* periodic interrupt (event) (~15Hz) */
            pgm_per();
            break;
	}
    }