I deal with these things by exporting to universally digestible format
from the original application.
I recall Xess was reliably reading/wring to Exel's .xls which would be
most likely 100% digestible by LibreOffice unless you used macros.
I've been fairly successful in converting not only data, but also
equations and basic formatting back in the days.
For the rare occasions where I forgot to export the documents (I still
have many mif and fm documents) to usable format at the archiving time
(90's), and I really need it - I resort to installing the ancient app
in old Linux/Windows/Dos in a virtual machine. Naturally I keep that
VM, so I could do such conversion again, if I ever need it. Just in
case someone asks, I do not have working Xess installation, but I have
FrameMaker and old Open/StarOffice for the occasional old files
LibreOffice refuses to read.
The only truly universal converter I have ever came across was
BabelFish created by late Douglas Adams.
I highly recommend it, it is wort every penny. It even correctly
converts between various character encodings going back to ancient
times.
Tomas
On Thu, 2017-02-09 at 08:20 -0800, Rich Shepard wrote:
> I have a 113K XessSE-5.0.8 spreadsheet file from earlier this
> millenium
> and LibreOffice's Calc does not recognize the format and convert it.
> Is
> there a universal spreadsheet format converter for linux?
>
> If not, suggestions on how to extract column headings and rows are
> certainly welcome.
>
> Rich
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