Question: What is the hour limitation on student visa holders?

Answer passage (source: Australia):
page_title: Frequently Asked Questions
section_headers: International students
I am unable to support myself in Australia, what can I do?
section_content: If you are unable to support yourself, you should make arrangements to return
to your usual country of residence, noting that it is a condition of all
student visas that holders have access to funds to support themselves for the
duration of their stay in Australia.
If you have held a student visa for 12 months or longer and cannot meet your
immediate living expenses, you can access up to $10,000 of your Australian
superannuation tax-free in the 2019-20 financial year.
The Government will continue to engage with the international education sector
which is providing some financial support for international students facing
hardship.

Reviewer feedback on this answer:
It seems like the answer is about the same topic, so this answer might be helpful.  Still, the question isn't answered here.
The answer doesn't mention any number of hours. The answer is about whether you can support yourself.

Reviewer ratings:
Could be Improved
Bad

Answer passage (source: Australia):
page_title: Frequently Asked Questions
section_headers: International students
Are these arrangements limited to students?
section_content: Student visa holders are already permitted to work in Australia with a usual
limitation of 40 hours per fortnight. In light of the current circumstances,
these arrangements respond to needs raised by sectors having regard to the
critical role that student visa holders play in their workforce to deliver
essential goods and services to the Australian community.

Reviewer feedback on this answer:
The answer is in the first sentence.  It directly states how many hours are allowed.
The question is answered. It gives an explanation on why the number is what it is.

Reviewer ratings:
Excellent
Excellent

Answer passage (source: Australia):
page_title: Staying in Australia
section_headers: I have a Student visa
Can I extend my Student visa?
section_content: Under Australian migration law, it is not possible to extend a Student visa.
You need to apply for a new visa if:

you cannot return to your home country and your visa is expiring
you need more time in Australia to complete your course.

You should apply for a new Student visa six weeks before your existing Student
visa expires. There is no need to provide evidence of impacts of COVID-19 with
your Student visa application.
If your study in Australia is ending, you can apply for a Visitor visa
(subclass 600). You need to do this before your Student visa expires.
More information on the Visitor visa.
Some services relating to the visa application process may be impacted and a
range of services are becoming unavailable. This includes panel doctors who
undertake medical checks, English language testing facilities and biometric
collection. While these services are unavailable, many applicants cannot meet
visa requirements. Students will be given additional time to complete checks
and provide the requested information.
Importantly though, making a new application before the current visa expires
will give you a bridging visa to remain lawful while all requirements are met.
Australian study requirements
The Department of Home Affairs does not regulate mode of study requirements.
You should contact your education provider.
Please refer to the Joint TEQSA and ASQA statement relating to flexible
delivery.
For the exceptions as a result of the travel restrictions, see the National
Code requirements for affected tertiary students to undertake online
study.
Notifying the Department
You do not need to notify the Department if you return home, or your study
situation changes.
Your visa remains valid until you lodge another visa application, or your visa
expires. The status of your visa will remain unchanged if you return home or
defer your studies.
Students experiencing financial difficulties
You are encouraged to rely on family support, part-time work where available
and your own savings to sustain yourself in Australia.
If you are unable to support yourself, you should make arrangements to return
to your usual country of residence, noting that it is a condition of all
Student visas that holders have access to funds to support themselves for the
duration of their stay in Australia.
Students who have been in Australia longer than 12 months who find themselves
in financial hardship will be able to access their Australian superannuation.
The Government will continue to engage with the international education sector
which is providing some financial support for international students facing
hardship.

Reviewer feedback on this answer:
The answer talks about student visas, but it doesn't state how many hours are allowed.
The question wasn't about extending a student visa. It doesn't mention the number of hours.

Reviewer ratings:
Could be Improved
Bad