Export vs IO

[sloriot]

Should those two groups be merged?

https://doc.cgal.org/latest/SMDS_3/group__PkgSMDS3IOFunctions.html
https://doc.cgal.org/latest/SMDS_3/group__PkgSMDS3ExportFunctions.html

Also output_to_ and write_ should also be merged.

[sloriot]

Also not all the functions in this group are exposed.

[lrineau]

The difference between the two groups are that:

• I/O functions are able to write->read->write and preserve the object,
• export functions are a one-way writing from memory to a file format that does not preserve all the properties of the object.

Maybe the two groups could be merge, but then there should be subsections in the merged group page, that split the group into two sub-groups.