Different model versions within a model can be saved using the "Save as Version" function.
More About RFEM 6:
www.dlubal.com/rfem
New Features in RFEM 6:
https://www.dlubal.com/en-US/products/rfem-6/new-features
More About RSTAB 9:
www.dlubal.com/rstab
New Features in RSTAB 9:
https://www.dlubal.com/en-US/products/rstab-9/new-features
Download the free trial versions and get to know the new RFEM 6 and RSTAB 9:
