Today I was using the random dungeon generator to throw together something quickly for my group tonight since a couple choices they made in email basically forced me to trash my intended direction with the campaign. Two of the options in the generator are percentage of concealed doors and percentage of secret doors. What is the difference between the two? I also note that in the elf ability description it references passing within 5 feet of a secret of concealed door. I don't have my core books with me (lent them out to a potential player) so I can't look this up.