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groupingblocks Often you will need more than one block for your programs. I provides a means of loading multiple blocks via a block group. For this, the first row of a block must contain the group name as a comment, separated by whitespace from any other text. To load these, pass a string with the group name comment to +needs . E.g., to load the standard library, you can do: '(std) needs All blocks matching the group name will be located and run. They will run in the physical block order, so ensure that the blocks are laid out correctly.