Discovering the LPS vs RAS convention of a data file


related to this other post,

I am having some VTK/P files that contains some tractography streamline data. I ignore whether the tool that produced this followed an LPS or RAS convention. Is there a tag or specific property that I could look for in the file to know this information?

I’ve seen that this information can be written as comments in PLY files, e.g.
SlicerDMRI/Modules/Scripted/TractographyExportPLY/ at 610533480896d2884cb9ab0671c88874d237247d · SlicerDMRI/SlicerDMRI · GitHub

so if there is no specific tag, I’m wondering how a VTK/P file could be queried to retrieve any comment or description tag.