`         -Dear Andrew, my apologies, CAL (Chronic Airway Limitation) is one of those frustrating new acronyms that are used which has replaced COPD. They all mean the same thing and this may seem trivial, but it actually really important. These days most UK, Australian and increasingly many more U.S. hospitals are using this as the 'default' title in place of COPD (or others) haha... Sorry to be fussy but I think it is very important to use up to date terms so that the article is easy to find and so that it uses the ``correct`` title. Whatever that means haha... best wishes, Tom H. (see http://www.abacci.com/wikipedia/topic.aspx?cur_title=Chronic_obstructive_pulmonary_disease, and http://www.ncahs.nsw.gov.au/chronic-disease/index.php?pageid=576&siteid;=182, http://www.erj.ersjournals.com/cgi/content/abstract/10/1/114)  `