Returns a new symbol pattern constructed, according to the parameter settings, from a symbol-pattern by repeating its symbols according to the loop-description. Loop- description consists of lists of operations, each of which describe one repeat area.
The operation has three parameters that are closed in parenthesis, the start-position, the end-position, and the number-of-repeats. They control the looping generator, which builds a new symbol pattern from the symbol-pattern, and appends it to the output list. If this new list has to be repeated, an optional fourth parameter repeat can be used. Rhythms in note-lengths are particularly succesful within loop definitions.
