15.78  X 

Put a sequence of values into one of the data point or error arrays.  This
is  useful  when  the  X values are uniformly spaced, and you only wish to
enter the Y  values.   This  may  also  be  used  for  entering  constant,
proportional  or  counting  errors.   You  may  also  modify the data by a
constant or an equation.  For example you can normalize the data. 
{[N][D]{X|Y|Z|U|V|W|THETA|RADIUS|PHI}}=
                             Generate a range of values
     [BINS|VALUES] [[FROM] xlow] [TO xhi] [BY|WIDTH|STEP xstep] [N=n]
                                     Operations
     "expression"
                    or ...
     {[N][D]{X|Y|Z|U|V|W|THETA|RADIUS|PHI}} [PLUS|+|MINUS|-|TIMES|*|
          DIVIDE|/] n [[NO]ERROR=n]
                    or ...  [POISSON|SQRT|SAMPLES=s]
                                   Data selection
     [APPEND[=ON|OFF]] [NAME="name"]
     [SETS=[FROM] n1 [TO] [n2]]
     [SELECT="name"]
     [POINTS|COLUMNS=[FROM] n1 [TO] [n2]]
     [LINES|ROWS=[FROM] n1 [TO] [n2]]
     [LOG[=ON|OFF]]