def get_example_rules_bubble():
    """an example in .bubble format"""
    example = """
>>> is the separator for rule configurations

only lines containing two,three,for,five or six '>>>' are parsed as rules
everthing else is ignored and can be used as comments

like to transform this:
 {
            "in": "Hello, Pulling in Hello:0"
 },
to:
 {
            "out": "Hello, Pulling in Hello:0"
 },

with a rule function, see [[rule_functions]].

you just have to create this rule
>>>in>>>replace_hello_with_goodbye>>>out>>>

>>>in,'1','10','2'>>>slicing>>>slice_1_10_2>>>
>>>in,'3' >>>slicing>>>slice_3>>>
>>>in,'4','8' >>>slicing>>>slice_4-8>>>
>>>'42',in>>>in>>>.we have found the answer>>>
>>>.we have found the answer:"what's the question?">>> >>>answer_found>>>

this is not a rule, but rules can be represent like this
>i> >f> >o> >d> >n> >>>
i=input
f=function
o=output
d=depend
n=name
for more on writing rules, [[rule_definitions]]
"""
    return example
