Example shows a file data source that includes general-style data.

# 3 lines, max 5 points each
GENERAL 3 5
# line 1, 3 points
3
1 3 5    # x-values
5 14 24  # y-values
# line 2, 5 points
5
1 2 3 4 5
11 15 18 21 22
# line 3, 2 points
2
2 4
16 15.2