The SAS Visual Analytics Embed page now covers mapping report parameters to
DC columns from the URL, which the name-based match cannot do for two report
objects filtering the same column from differently-named parameters.
- new "Mapping parameters to columns" section: the `va_parmap` grammar, the
lower-case example, what overrides what, and the rules that matter to a
report author (last-hyphen split, label-then-name key matching, one parameter
to one column, no fallback to the name match)
- the warning banner is documented next to it, including that a parameter is
ignored rather than filtered on the wrong column
- the `?embed=` table now shows the Filter button per mode, so it is explicit
that `embed=true` keeps Data Controller's own filter builder while `embed=va`
hands filtering to the report
dc
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