The Transfer Blocks option allows you to transfer blocks from the regular block topology to the output blocks.

You can use this option after manipulating the regular blocks using any block topology function (for example, Split Block, Extend Split, Merge Blocks). Select the blocks to be transferred and click Apply.

The Output Blocks option in the Display Tree (Blocking > Pre-Mesh) is used to toggle Output Blocks for viewing; editing; or writing the multiblock, structured mesh files.