I've got an image I want to appear in multiple galleries. I don't want to duplicate images. It doesn't appear that this plug-in supports adding photos to multiple galleries. If it did, this would solve my problem.
I thought maybe I could solve this problem using tags. I added the same tag to four images (two in each of two galleries). In the documentation I found the only tag-related markup to be:
[nggtags gallery=mytag,wordpress,... ]
The issue with this is that I want to use the pop-up/lightbox-style "image browser" mode, as in:
Is there a way to merge these concepts for an image browser tag-sorted gallery?
Is there any more detailed documentation of syntax than the faq page?