TAXREF references many publications across its documentation. The different sources are used for different reasons. This function returns the list of usages for a source when no arguments are provided, otherwise returns the specific type of use.
rt_source_uses(usage_id = NULL)
NULL
or numeric(1)
[default = NULL
]
the id of a source use in TAXREF
if (FALSE) rt_source_uses(usage_id = 276)