"Forms abstracting a common stack shuffle pattern:"
{ $subsections if* when* unless* }
"Another form abstracting a common stack shuffle pattern:"
-{ $subsections ?if }
+{ $subsections ?if ?when ?unless }
"Sometimes instead of branching, you just need to pick one of two values:"
{ $subsections ? }
"Two combinators which abstract out nested chains of " { $link if } ":"