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When reading a PS single-spaced sentence, it can be hard to tell the difference between comma-space and period-space, or period-space (in reference to an acronym) and period-space (in reference to a sentence ending). With period-space-space, you know that it is the next sentence, without any room for confusion. -- SineSwiper 03:35, 10 Feb 2005 ...
The comma-free approach is often used with partial quotations: The report observed "a 45% reduction in transmission rate". A comma is required when it would be present in the same construction if none of the material were a quotation: In Margaret Mead's view, "we must recognize the whole gamut of human potentialities" to enrich our culture.
In an earlier era, writers using a typewriter commonly left two spaces after a period, a question mark, or an exclamation point. Publications in the United States today usually have the same spacing after concluding punctuation marks as between words on the same line.
Roy Peter Clark, writing for the Poynter Institute, the journalism school in St. Petersburg, Florida, gently satirizes the aesthetic camp, in a 2007 tongue-in-cheek piece about British and American English: "I hate it the way [the British] leave punctuation outside quotation marks. Periods and commas look so cold and lonely out there.
The summary information consists of subtotals that are combined from previous rows within the same column. The concept of dimension is also a part of basic terminology. [7] Any "simple" table can be represented as a "multi-dimensional" table by normalizing the data values into ordered hierarchies.
In transcriptions of non-tonal languages, the three symbols – pipe, comma, and period – may also be used, with the pipe representing a break more minor than the comma, the so-called list prosody often used to separate items when reading lists, spelling words, or giving out telephone numbers.
Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.
In the periodic table of the elements, each numbered row is a period. A period on the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor.