Athanasius uses the sort BLOCK LIST syntax of sort. The block is {$a <=> $b}. Blocks are documented in Basic BLOCKS. The operator (<=>) is described in Equality Operators. The package variables $a and $b are described through out the documentation for sort. The short answer is that this block tells sort to sort the list in numerical order rather than the default lexical order.
Bill

In reply to Re^3: Length of strings in an array by BillKSmith
in thread Length of strings in an array by shabird

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