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An Acronym with many meanings.

Lines Of Code
An incredibly poor measure of the size of a project sometimes used by Management in SoftwareEngineering. The main virtue of lines of code as a measurement is that it is quick and easy to calculate and can be performed on any ProgrammingLanguage.
Library Of Congress

This is a unit of storage capacity or rate of transmission, as in "our highspeed link could transfer 3 library of congresses (sic) in 3.5 seconds". There appears to be no agreement on whether the unit represents library of congress as

  1. ASCII text files (which would be lossy, since there are many non-ASCII books and many with images)
  2. page images (at some unknown level of resolution)
  3. the metadata associated with the collections
  4. the library of congress website.

Generally 1 or 3 is used by vendors and reporters, since it results in bigger throughput.

Location

A field in a DNS record.

$ host -t LOC waikato.ac.nz
waikato.ac.nz. LOC 37 48 30.000 S 175 17 36.000 E 66.00m 3000m 30m 10m

This gives a GPS location: 37 deg 48' 30" South (latitude), 175 deg 17' 36" East (longitude), and 66 metres about sea level. The last two numbers appear to mean that the whole site is within 3000 metres of the given point. The point is accurate to about 30 metres, although this interpretation may be wrong. (It will be in the appropriate RFC if anyone can be bothered looking it up.)

xtraceroute(1) will use these records if it can find them. Unfortunately not many sites use them.