Yes, you are right. That parameter is meant to be created for MultiGridView only. (inactive for GridView).
I just cleaned those 2 unnecessary plugins parameters, in the new version of CleanMart, those 2 plugin parameters won't exist anymore.If you find any more, please let me know.
That parameter does work On MultiGridView though:
If the "More Info Button" is set to YES, the result:
Attachment Pasted_Image_2_14_15__4_06_PM.png not found
If the "More Info Button" is set to NO, the result:
Attachment Pasted_Image_2_14_15__4_07_PM.png not found
regards.