From the NLM Technical Bulletin:
A new FAQ, Article Versions and MEDLINE/PubMed Citations, is now available. A version is a subsequent publication of a previously published article that incorporates new data or findings using a publishing practice designed specifically for rapidly communicating scientific results.
Article Versions and MEDLINE/PubMed Citations FAQ. NLM Tech Bull. 2012 Mar-Apr;(385):b11.
The PubMed Send to menu was updated to include a “Citation manager” selection.
Canese K. PubMed Results and Citation Manager Software. NLM Tech Bull. 2012 Mar-Apr;(385):e5.
The PubMed Abstract display now includes a “Save items” portlet that will provide users with an easy way to add items of interest to a My NCBI collection. My NCBI users that are signed in may click the Favorite button, which will turn blue when selected, to add the citation to a new My NCBI collection, Favorites.
Canese K. PubMed and the My NCBI Favorites Collection Feature. NLM Tech Bull. 2012 Mar-Apr;(385):e6.