adding metadata for pdfs
I have retrieved several pdfs for which Zotero could not find metadata. The current item, for example, is in my Zotero library as p153.pdf. I would like to manually add the metadata, but the only method I have been able to develop is to create a new record, fill it manually, and drag the pdf to it. I was surprised there was no way to create that in the right-hand frame when the pdf is highlighted. There is no way to add a note or tag in that right-hand frame either. Am I missing something?