Upper & lower case letters r named 'upper' & 'lower', cause in d time whn all original print had 2 b set in individual ltrs, d 'upper case' ltrs were stored in d case on top of d case tht stored smaller, 'lower case' ltrs.GD MRNG
"Life is a Book of Mysteries.,U'll Never kNow which Page wil briNg a Good Twist.,So,keep On ReadiNg.,Bcoz HappiNess comes wheN it's Most Unexpected".GM