I have found the list of options in manifold.py, and thus in the 
documentation under Topological Manifolds. Thank you again.
It is unclear why the documentation search function does not find it, but, 
no matter, problem solved.
 - Richard

On Saturday, November 18, 2017 at 8:47:23 PM UTC-8, Richard_L wrote:
>
> Thank you. I missed that in the examples. Is there documentation listing 
> all Manifold.options? I cannot find one with the documentation search. 
>
> On Saturday, November 18, 2017 at 3:40:41 PM UTC-8, Eric Gourgoulhon wrote:
>>
>> HI,
>>
>> Le samedi 18 novembre 2017 23:55:35 UTC+1, Richard_L a écrit :
>>>
>>> Applying ExpressionNice() to an expression containing partial 
>>> derivatives cleans up the presentation, suppressing the display of function 
>>> arguments in the partial derivatives. However, zeroth order derivatives 
>>> (i.e., the function alone) are not cleaned up. 
>>> I think it would be useful to extend the cleanup to zeroth order. 
>>>
>>
>> This is not by default, but you can have it: it suffices to type
>>
>> Manifold.options.omit_function_arguments=True
>>
>> cf. the documentation at 
>> http://doc.sagemath.org/html/en/reference/manifolds/sage/manifolds/utilities.html
>>
>> Best wishes,
>>
>> Eric.
>>
>>

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