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Small and Large Field, what is the different when export Solver Input File in SimLab?

Hi experts,

I'm using SimLab to export Nastran Solver Input Files.

It's different between Small and Large Field option, when I open it in text format.

Anyone could explain me through this?

English

SimLab

v2022.2

Large field format allows 16 characters per field instead of the normal 8, extract here from Optistruct Manual (which uses same syntax as Nastran)

Large field format allows 16 characters per field instead of the normal 8, extract here from Optistruct Manual (which uses same syntax as Nastran)

Thanks a lot for your answer!!