== re: the meaning of 'dab' == 

 dab means disambiguating 
 For example, today a found a link to Oz.  The subect was the TV show named Oz, but of course the article that the link pointed to was just a disambiguation page, not an article about the TV show.  So by making the link more specific, I disambiguated it.   

 I know, the abbreviation isn't obvious and it confused me for a long time...