This command allocates space for a new data set. This is e.g. required if a data set should be created using the FORTRAN interpreter of KUPLOT. The command 'alloc <name,<len>' allocated space for <len> points for a 2d data set. To allocate a 3d data sets, the size in x- and y-direction is given after the name of the data set. The parameter <name> just specifies a name for the data set (also used as default filename if the data set is saved).