'[' condition-clause ']' e.g.: [mode = evaluate]Sequence-expression:
[integer | name] [recurrence] ':' e.g.: 2 *[n := 1..z]: [integer | name] e.g.: 1.2.3.7: 1.1a, 1.1b/1.2: [recurrence] conditional: '[' condition-clause ']' e.g.: [x<0] iteration: '*' '[' iteration-clause ']' e.g.: *[x=1..10] (Return-value := Signature:
return-value := signature eg.g.: x := calc(n) prim := nextPrim(prim)