Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.

Q: I'm a little bit confused with the following phrase. I was reading an article about concurrency in Java and there was a sentence saying: It is worth noting that both unlockRead() and unlockWrite() calls notifyAll() rather than notify(). This phrase seemed quite strange to me. What does it mean?.

A: 'It is worth noting that' simply means 'here's something, which you should remember:' or 'here's something you should pay attention to:' or 'here's something that is worth reading and remembering:' It's that simple. Regarding (1), there is no connection at all to 'apropos' or 'besides...' Regarding (2), it always means exactly the same thing. It simply means 'Here's an interesting point:' (There is utterly no connection in any way to 'useless' or 'costs nothing'.) It is worth noting that, the ELL site exists for basic questions about the meanings of phrases.
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Q: I understand all the individual words in the following remark, but there doesn't seem to be any connection between the first half and the second. I am left wondering whether there is an English idiom that gives a double-meaning to part of it (perhaps 'picking my belly button'?), but if so it does not appear to be in any dictionary. I'm not Catholic, but I gave up picking my belly button for lint. Reference: The best God joke ever - and it's mine!.

A: In Catholicism (and indeed many other branches of Christianity), the six weeks leading up to Easter are a time of contemplation and purification before the major festival. This period is known as Lent, and it is common to deny oneself something (say, sweets, chocolate, or playing computer games) as part of one's preparations (or at least it used to be these days there is a strong trend towards doing something positive such as doing something for charity). Thus in Catholic households, at a certain time of year, it's not uncommon to hear declarations such as 'I'm giving up [chocolates] for Lent'. The joke puns on the similarity in sound between Lent and lint, a word that can be used among other things to describe the fuzzy accumulation of clothes fibres that sometimes builds up in one's navel: he's saying he's giving up picking the lint out of his bellybutton, but in such a way that it sounds like he's giving up picking his bellybutton for Lent. For this he deserves an almighty thwack.
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Q: I just created an inch to mm conversion calculator and I am writing a blog post announcing its launch. When should I capitalize the terms inch and millimeter? Does it matter if I'm spelling it out? What if I'm using an abbreviation or symbol? What if it begins a sentence?.

A:
No, units generally do not need capitalization when spelled out. For SI units, the Bureau International des Poids et Mesures is the authority: Unit names are normally printed in roman (upright) type, and they are treated like ordinary nouns. In English, the names of units start with a lower-case letter (even when the symbol for the unit begins with a capital letter), except at the beginning of a sentence or in capitalized material such as a title. In keeping with this rule, the correct spelling of the name of the unit with the symbol C is 'degree Celsius' (the unit degree begins with a lower-case d and the modifier Celsius begins with an upper-case C because it is a proper name). The International System of Units (SI), 8th ed., Sec.5.2 However, capitalization is used in the following cases: Symbols for SI units named after people, for example: 1 ampere, abbreviated as 1 A 1angstrom or 1angstrom, abbreviated as 1A Note that the names of the units themselves are lowercase. The symbol for litre or liter is l, but is often written as L to prevent it from looking like the digit 1. It is also sometimes rendered in lowercase cursive form for the same reason: The litre, and the symbol lower-case l, were adopted by the CIPM in 1879 (PV, 1879, 41). The alternative symbol, capital L, was adopted by the 16th CGPM (1979, Resolution 6; CR, 101 and Metrologia, 1980, 16, 56-57) in order to avoid the risk of confusion between the letter l (el) and the numeral 1 (one). The International System of Units (SI), 8th ed., Sec.4.1 Temperature degree units, e.g. degrees Celsius or degrees Fahrenheit, abbreviated as C and F, as stated in the quote above. Note, however, that the kelvin follows the rule for units named after people: 1kelvin, abbreviated as 1K. Special non-SI units, such as the British thermal unit, abbreviated BTU or Btu, or the US gallon, for obvious reasons. The astronomical unit is abbreviated either as au or AU. The international unit is abbreviated IU. A byte is abbreviated as B; a bit is abbreviated as b. A decibel is abbreviated as dB. One unit where capitalization makes a huge difference is the calorie. A calorie (abbreviated cal) is the energy needed to heat one gram of water by 1C. This unit is used by physicists and chemists. A Calorie (abbreviated Cal or kcal) is actually a kilocalorie 1000 times the amount of energy of a calorie. This unit is used by dieticians and the general public when describing food. Naturally, at the beginning of a sentence, the usual rule that the first letter be capitalized overrides all of the above. For example, Watt for watt, a RISC chip delivers better performance than a CISC chip. Also note that capitalization is significant in the SI prefixes. For example, mW is a milliwatt, and MW is a megawatt.
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