This command sets the contour line parameters. The first parameter <ic> specifies the contour line set, which is defined by the following numbers. The contour lines starting level is given by <min>, the increment by <inc> and the number of contours to be plotted by <n>. As default the given values are taken as absolute values. However, is a fifth parameter set to "%" the values of <min> and <inc> are taken relative to the maximum/minimum value of loaded data set 1.
Is the command given without parameters, the current settings of the contour parameters are displayed on the screen.