- We try to write format version 1 if possible to stay as
compatible as possible (unless newer features are actually
used)
- Format version 2 has new section types:
- MultiTimeBasedDrawn: with multiple timestamp ranges
- ExpiryDate: to indicate this file has expired
- An additional Box element type that fills a box is available
- Also there are lots of flags to draw things in dark are now
available - to draw dark pixels on a light background
The code always tries to serialize with the lowest possible version,
but will use the minimum version required to satisfy all settings
used in the file description.
Christian Seiler