/*! \page build_by_blocks_page Building by blocks

Introduction

Below are some general notions about blocks: A block is a an elementary geometric solid that has specific geometric constraints oriented for meshing. In the hexahedral case, blocks have 6 faces and each face has 4 edges. Tetrahedral Block - is a block with constraints for tetrahedral meshing. Hexahedral Block - is a block with constraints for hexahedral meshing. Block Compound - is a compound composed of blocks only. Some functionalities that allow building blocks easily are available from the main menu via New Entity / Blocks. */