Exported FMUs should expose all internal variables

[robbr48]

They should not be flagged as "output", but still available for logging purposes.

[peterNordin]

Do FMUs have a mechanism to selectively enable or disable variables? Or maybe to hide variables. If we enable all of them allways there will lots of "ports" showing up i graphical modelling applications.
Maybe its up to the application using the fmu?

[robbr48]

Graphical tools usually only shows variables flagged as "input", "output" and "parameter". Other variables are only used for logging or debugging.