What does L stand for?

What does L mean?

L	Living Medical » Physiology
L	List Computing » Assembly
L	Life Medical » Physiology
L	Long Miscellaneous » Unit Measures
L	Local Miscellaneous » Unclassified
L	Line Miscellaneous » Unclassified
L	Look Miscellaneous » Photography
L	Like Business » International Business
L	Large Miscellaneous » Clothes
L	Live Community » Religion
L	Low Governmental » Transportation
L	Low Business » Stock Exchange
L	Location Community » Housing
L	Let Miscellaneous » Unclassified
L	Lyrics Miscellaneous » Unclassified
L	Language Miscellaneous » Unclassified
L	Length Miscellaneous » Unclassified
L	Libraries Miscellaneous » Unclassified
L	Large Miscellaneous » Food
L	Listing Miscellaneous » Unclassified
L	Length Governmental » NASA
L	Low Governmental » NASA
L	Length Governmental » Military
L	Left Medical » Physiology
L	Learning Community » Educational