Better documentation for function insertion in the format value (e.g. sprintf cooperation) #141
Description
I think this is one of the best features in customizing rtables values. We should allow users to know this more readily. I propose to extend examples in function sprintf_format and add @seealso to list_valid_format* with that function and round_fmt. It is also necessary imo to have a short explanation at the end of function call list_valid_format* that explains the possibility to use dynamic function calls to set the format.
Tracked by insightsengineering/rtables#611