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parameter list is sometimes called the operator,
and the terms of the term list are called subterms.

Wiki MarkupEG, \ ["foo","OPID"; "1,"n"\],\[\["bar","OPID"; "a","s"\],\[\]\]

Shorthand : use {,} to indicate parameter list with and (;) for subterm list
EG: {foo:OPID, 1:n}({bar:OPID, a:s}())

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If either list is empty leave off {} or ()
EG: foo{1:n}(bar{a:s})

Wiki MarkupIf both lists are empty, ie just and OPID then include ()
EG, nil() == \ ["nil":OPID\],\[\]

Wiki Markupthe parameter list can be empty, eg {}(foo())
or most degenerate case : \ [\],\[\] == ()