11.52.74 urange

set urange [ <range> ] [reverse]

The set urange command changes the range of the free parameter u used when generating parametric plots sampled over grids of (u,v) values. For more details of the syntax of the range specifier, see the set xrange command. Note that u is not allowed to autoscale, and so the * character is not permitted in the specified range.

Specifying the set urange command by itself specified that parametric plots should be sampled over two-dimensional grids of (u,v) values, rather than one-dimensional ranges of t values.