The last versions of Surfer do not allow saving at older formats (V.8).
It is not possible to read old files (V5 and V6).
This obliges to maintain older versions of Surfer in the same computer and limit the possibilities of exchanges with colleagues.
It becomes a strong limitation to the use and share of Surfer with colleagues.
As I use Surfer since many years it is really unpleasant to discover that an old but still valuable work could not be read.
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