When opening a text file, you are first asked if you want to open the file either as measurement time domain raw data or as data to be plotted without any further post-processing. The data must be grouped in columns and separated using TAB. If the data file contains only one column of data, WinMLS will plot these data using 0,1,2,3.... as x-axis. If the data file contains several columns of data will use the first column as x-axis data and plots the remaining as curves. All columns must be the same size.