complementary template A complementary template is a sequence of 'nop' instructions that are found, in the heads_default and heads_sex instruction sets, by taking each 'nop' instruction that makes up that template, and shifting it to the next in alphabetical order, looping around at the end. Thus, 'nop-A' -> 'nop-B' -> 'nop-C' -> 'nop-A'. In the transsmt instruction set, the complement is the template where each 'Nop' is shifted over in sequence by 2, such that the complement of the complement recovers the original template: 'Nop-A' -> 'Nop-C' -> 'Nop-A' and 'Nop-B' -> 'Nop-D' -> 'Nop-B'.