Mesh generation advices Code_Saturne website

Hi,
I have found this document on Code_Saturne website [Mesh_Generation](https://www.code-saturne.org/cms/sites/default/files/file_attach/BPG/BPG-2-Mesh-Generation.pdf) and as it is not dated and referenced on Code_Saturne website, I have not found any information in the actual v7 guides, so are the information related on the mesh generation still valid ?
More precisely, is it better to use quad based/hexa meshes or triangle based/tetra meshes with Code_Saturne ? I thought that hexa were better but in the document, it is stated that :

> For RANS computations, at least, a good mesh consisting of tetrahedra (a fine mesh of equilateral tetrahedra) is a better choice than a mesh of hexahedra containing non-orthogonal cells.

Is this document up to date ? I get poor performances with tetrahedra whereas hexa meshes work nice

Review the referenced Mesh_Generation PDF against the current v7 guides and the Code_Saturne website. Determine whether the mesh recommendations and the quoted RANS guidance remain valid, then document the current advice and explain the differing tetrahedral and hexahedral performance observations.

Written by the indexing model from the issue text.