# PWL description of analog and digital signal
# 1st column is x, 2nd and 3rd columns are resp. y1 and y2
0   10    1.1
1   20    2.2
2   30    3.3
# comment
3   40    4.4
4   20    2.2   // a new comment
5    0    0.0
# another comment
6   10    1.1