Function composition

Select Connection: INPUT[inlineListSuggester(optionQuery(#permanent_note), optionQuery(#literature_note), optionQuery(#fleeting_note)):connections]

The composition operator $\circ$ takes two functions $f$ and $g$ and returns a new function $h(x)=(g\circ f)(x)=g(f(x))$

Reverse composition ($f\mapsto g$) applies the operation in opposite order.