System tags are special tags that come with a predefined meaning. At present, BibSonomy offers three types of system tags:
Executable system tags are added to a post to execute some special action with that post.
for:<groupname>: Tagging a post with
for:xygroup will copy that post to the group's collection with the tag replaced by
from:YourUserName. Should you change or even delete your post, the copied post of the group will remain unaltered. You must be a member of the group you forward the post to.
send:<username>: This tag allows sending a post to the inbox of another BibSonomy user. To use this tag, the receiver must have added you to his friends list or you must be a member of the same group.
Markup system tags are used to label your posts. Currently BibSonomy supports the following markup system tags:
myown: A post tagged with
myown will appear on your CV page.
sys:relevantFor:<groupname>: A post with the tag
sys:relevantFor:xygroup will appear on the "relevantFor"-page of the
xygroup. Thus, this tag has the same effect as selecting
xygroup in the "relevant for"-box while editing the post.
sys:hidden:<tag>: hides a tag from every user besides yourself.
Search system tags are not for tagging a post but rather to be used as a filter in search queries. They all have the same syntax:
sys:<fieldname><fieldvalue>. For example, searching with
sys:author:xyz will only return posts where the author is
xyz. BibSonomy supports the following filters:
sys:author:<authorname> filters the search range by author.
sys:bibtexkey:<bibtexkey> filters the search range by bibtexkey.
sys:entrytype:<entrytype> filters the search range by entry type.
sys:group:<group>filters the search range by group.
sys:not:<tag> excludes entries with the tag <tag>. Here you can also use wildcards, e.g.
sys:not:news_* excludes all posts with tags that start with
sys:title:<title> filters the search range by title.
sys:user:<user> filters the search range by user.
sys:year:<year> filters the search by year. Several arguments are possible, e.g.:
2000: all posts from the year 2000
2000-: all posts from the year 2000 or from one of the following years
-2000: all posts from the year 2000 or from an earlier year
1990-2000: all posts from the years 1990 to 2000