PRINT (expr);            Print values for 'expr'

The PRINT procedure outputs successive values calculated for 'expr' to
the standard output device.  PRINT output normally goes to the video
display screen unless the 'output to line printer' parameter is set via
the Execution Options or DOS's I/O redirection facilities are used to
send the output to a disk file.  Alternatively, entering control-P on
the keyboard when entering the DAN command line will send the output to
both the screen and the printer.

Values are printed five per line preceded by a time tag that
corresponds to the first data value on each line.  Time tags for
successive values on the same line are one step size larger than
the preceeding one.  Note: time tags are printed even if an X axis
file has been specified.  The XFORMAT and YFORMAT controls
determine the format of the time tag and data values respectively.
+
The current main label (LABEL) is used in the header line at the top
of each page.

PRINTs done while a graph is on the screen will overwrite the graph
unless you 1. have a Hercules graphics interface, or 2. used the '-L'
command line option.  Try to do PRINTs before any PLOTs, or precede
the PRINT with an ERASE.

PRINT statements should not be grouped with other PRINT
statements via the ampersand terminator.  In such a case, DANAL
prints values for the grouped expressions starting with the last
expression of the group and cycling through successive expression
values.  For instance, if the following statements were executed:

     PRINT (A)  &  PRINT (B);

the first data value printed would be for expression B at START,
the second for expression A at START+STEP, the third for B also
at START+STEP, etc.
