Not all fonts have the letter M in them (for example Chinese), but all fonts have a height. The term has therefore come to mean the height of the font - not the width of the letter M. In CSS, the em unit is a general unit for measuring lenghts, for example page margins and padding around elements.
Boston University's largest study abroad program is located in London, England. Boston University London Programmes offers a semester of study and work in London through their London Internship Program (LIP), as well as a number of other specialized programs.
Clemson University is located in Clemson, S.C., a town of about 14,000 located in the middle of the I-85 corridor between Atlanta, Ga., and Charlotte, N.C. The 1,400-acre campus is next door to the S.C.