Hello, everyone!I am learning to use K2, and i love it very much. But a question has tortured me for days: What are the options for 1. in global parameters -> Layout & view options for user (author) pages -> Enable K2 plugins (Yes or No) 2. in global parameters -> Frontend Editing
-> K2 plugin fields on edit form (Show or Hide)3. in category edit page -> item view options in category listings -> Enable K2 plugins (Yes or No)4. in category edit page -> item view options -> Enable K2 plugins (Yes or No)i have no idea what these plugins refer to, what are they designed for, and what difference does it meke by changing these settings?Please give me some clues because I think i am missing some important features in k2:)Thanks in advance!