Update README.md

TimGoTheCreator · web-flow · commit fe8aa62341a2 · 2026-02-01T21:06:19.000+03:00
diff --git a/README.md b/README.md
@@ -38,5 +38,9 @@ python two_body.py
 ../../next two_body.txt 0.1
 ```
 
-### Next Mathematics
-NEXT uses Division-avoiding algebra optimizations to make the simulation run faster. 
+### NEXT Mathematics
+NEXT uses Division-avoiding algebra optimizations to make the simulation run faster. 
+
+### NEXT Data Output
+NEXT uses the .VTK format to output data.
+More formats like HDF5 are planned. 
