RainPro has a pre-defined cycle of up to 15 markers which are used in turn for each line that you draw. The default cycle is ‘Cross,Plus,Diamond,Triangle,Del,Lozenge’. To reset the cycle:

chSet 'Markers'  1 2 1 3          © by number

1. Cross ... 9. ... A1 – 1 pixel
2. Plus ... 10. ... A2 – 5 pixel
3. Diamond ... 11. ... A3 – 9 pixel
4. Triangle (point upwards) ... 12. ... A4 – 11 pixel
5. Del (point downwards) ... 13. ... A5 – 24 pixel
6. Lozenge (filled diamond) ... 14. ... Node
7. Block (solid square) ... 15. ... Ball
8. Invisible ... ...

Markers 9–13 are solid circles which increase in area in a constant ratio, so that they can be used (for example) for density maps where each marker might represent a population size at that point. Markers 14 and 15 are ‘3D­effect’ spheres (small and large) intended for use in 3D plots.

Numbers above 16 (it may be best to use numbers from 100-999) are free for your own markers. See User Defined Markers for more information – you can use characters or simple vector graphics as custom markers.