Some important Roman ruins are exposed under the Plaça del Rei, its entrance located by the city museum ( Museu d ' Història de la Ciutat ); the typically Roman grid plan is still visible today in the layout of the historical centre, the Barri Gòtic (" Gothic Quarter ").

Some have a more complex layout and include an entrance passage giving them a T-shape.

Some sections of the old Fenway Park were to be preserved ( mainly the original Green Monster and the third base side of the park ) as part of the overall new layout.

Some scholars see in this five-part layout a deliberate plan to create a parallel to the first five books of the Old Testament ; others see a three-part structure based around the idea of Jesus as Messiah ; or a set of weekly readings spread out over the year ; or no plan at all.

Some models include a configurable key layout that can emulate different instruments ' fingering systems.

Some keyboards, such as the Kinesis, retain the QWERTY layout but arrange the keys in vertical columns, to reduce unnecessary lateral finger motion.

Some countries, such as the UK and Canada, use a slightly different QWERTY ( the @ and " are switched in the UK ); see keyboard layout.

Some board games use tiles to create their board, giving multiple possibilities for board layout, or allowing changes in the board geometry during play.

Some layout programs include style sheets for images in addition to text.

Some prototyping " breadboards " have this layout, but with metal socket strips into which components are pushed ; all the terminals in a straight line in one direction are electrically connected.

Some engine tuners believe that this will maximize the exposure of the fuel-air mixture to the spark, also ensuring that every combustion chamber is an even in layout and therefore result in better ignition ; others, however, believe that this is useful only to keep the ground electrode out of the way of the piston in ultra-high-compression engines if clearance is insufficient.

Some sniper rifles – such as the American Barrett M95, the German WA 2000, the American XM500, the Chinese QBU-88, the Russian Dragunov SVU, and the Polish Bor – use the bullpup layout.

Some high-performance sports car manufacturers, such as Ferrari and Lamborghini prefer this layout.

Some sport cars have used the front-engine, front-wheel drive layout ( FF ), e. g. Fiat Barchetta, Saab Sonett and Berkeley cars.

Some of the shops in the town centre are still to the same layout as in Medieval times, one rod in width, the standard length for floor and roof joists.

Some page layout programs allow the user to kern characters within their text.

Some yearbook publishers have agreements with schools, whereby the staff send photos and copy for layout by the publishing company ; the layout is later sent to the school for final editing.

Some of these temples, such as the Emperor Guan Temple in Xiezhou ( 解州 ), Shanxi, were built exactly in the layout of a palace, befitting his status as an " emperor ".

Some layout methods automatically lead to symmetric drawings ; alternatively, some drawing methods start by finding symmetries in the input graph and using them to construct a drawing.

Some newspaper copy editors select stories from wire service copy ; others use desktop publishing software to do design and layout work that once was the province of design and production specialists.

Some of the basic original layout plans remain at University College today.

Some other types of pixel layout showing how dot pitch is measured.

Some alternative tunings simply change the key of the kalimba, without changing the note layout scheme.

Some engines also use cast iron crankshafts for low output versions while the more expensive high output version use forged steel.

Some 19th-century or earlier experimental engines used external flames, exposed by valves, for ignition, but this becomes less attractive with increasing compression.

Some engines convert heat from noncombustive processes into mechanical work, for example a nuclear power plant uses the heat from the nuclear reaction to produce steam and drive a steam engine, or a gas turbine in a rocket engine may be driven by decomposing hydrogen peroxide.

Some engines ( air or water cooled ) also have an oil cooler.

" Some unusual engines ", 1975 The Institution of Mechanical Engineers, London.

Some specialised search engines such as Google Scholar offer a way to facilitate searching for academic resources such as journal articles and research papers.

Some aviation engines as well as some early luxury cars have had dual-plugged systems with one set of plugs fired by a magneto, and the other set wired to a coil, dynamo, and battery circuit.

Some real-time software 3D engines based on ray tracing have been developed by hobbyist demo programmers since the late 1990s.

Some engines were equipped with a switch that cut out only some rather than all of the cylinders to ensure that the engine kept running and did not oil up.

Some search engines apply improvements to search queries to increase the likelihood of providing a quality set of items through a process known as query expansion.

Some SSTO vehicles use the same engine for all altitudes, which is a problem for traditional engines with a bell-shaped nozzle.

Some SSTO vehicles simply use very high pressure engines which permit high ratios to be used from ground level.

Some designs for SSTO attempt to use airbreathing jet engines that collect oxidiser and reaction mass from the atmosphere to reduce the take-off weight of the vehicle.

Some commercial aircraft with turboprop engines include the Bombardier Dash 8, ATR 42, ATR 72, BAe Jetstream 31, Embraer EMB 120 Brasilia, Fairchild Swearingen Metroliner, Saab 340 and 2000, Xian MA60, Xian MA600, and Xian MA700, Fokker 27, 50 and 60.

Some of the most popular and successful online sites or search engines of the 2000s included Google, Yahoo !, Wikipedia, Amazon, eBay, MySpace, Facebook, Twitter, and YouTube.

Some search engines, like Yahoo, use automated processes to detect soft 404s.

Some 100-200 engines completed their mission on Soviet and Russian satellites until the late 1990s.

Some are carbureted, usually the smaller engines.

Some of the Shuttle systems integrated in the simulation are the main propulsion system, main engines, solid rocket boosters, ground liquid hydrogen and liquid oxygen, external tank, flight controls, navigation, and avionics.

Some search engines give a higher rank to results where the keyword searched for appears in the URL.

Some search engines like Vivísimo try to group found web pages into automated categories in an attempt to show various genres the search hits might fit.

Some older biplane designs, such as the Grumman Ag Cat and the aforementioned An-2 ( in the form of the An-3 ) are available in upgraded versions with turboprop engines.

Some small propeller-driven aircraft engines still use the updraft carburetor design.

Some lower-compression piston engines can operate on unleaded mogas, and turbine engines and diesel engines — neither of which requires lead — are appearing on some newer light aircraft.