This has the form plug-in-type plug-in-name argument-list.
(inout datatype varname, inout datatype varname, ).
The QTPL arguments must correspond in sequence and datatype to the QSAS data-object pointers expected by the C++ plug-in.
There is a limit of 30 outputs, but input slots are unlimited, and if too many slots are specified to fit on the screen the plugin interface window becomes scrollable.