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Electronic mailing technique
Variable envelope return path (VERP) is a technique used by some electronic mailing list software to enable automatic detection and removal of undeliverable
Variable_envelope_return_path
Email address to which bounce messages are delivered
them used universally, including return path, reverse path, envelope from, envelope sender, MAIL FROM, 5321-FROM, return address, From_, Errors-to, etc
Bounce_address
Automated message from an email system
delivery failure details is much more commonly implemented with variable envelope return path (VERP), while explicit requests for them are rarely implemented
Bounce_message
Rewriting an email message sender address
with a DKIM check. SRS is a form of variable envelope return path (VERP) inasmuch as it encodes the original envelope sender in the local part of the rewritten
Sender_Rewriting_Scheme
Internet protocol used for relaying e-mails
RFC 3030 DSN – Delivery status notification, RFC 3461 (See Variable envelope return path) ETRN – Extended version of remote message queue starting command
Simple_Mail_Transfer_Protocol
Mail transfer agent server software
Missing or empty |title= (help) Sam Varshavchik (26 July 1999). Variable Envelope Return Path SMTP Extension. IETF. I-D draft-varshavchik-verp-smtpext-01
Courier_Mail_Server
Email authentication method
null return address. Sender Policy Framework (SPF) Sender Rewriting Scheme (SRS) Simple Mail Transfer Protocol (SMTP) Variable envelope return path (VERP)
Bounce_Address_Tag_Validation
Method against email spam
Similarly, some e-mail systems use unique per-message return-paths, for example variable envelope return path (VERP) for mailing lists, Sender Rewriting Scheme
Greylisting_(email)
Type of electrical rectifier with a liquid cathode
pool quickly to avoid providing a conductive path between the cathode and respective anode. Glass envelope rectifiers can handle hundreds of kilowatts
Mercury-arc_valve
Analogue polyphonic synthesizer
intensity. The audio signal path passes through a voltage-controlled amplifier (VCA), which can controlled via an ADSR envelope generator or an external
Korg_Poly-61
Airship in which the envelope is supported by a framework
mind" and by 1891 he had produced detailed designs of a variable volume corrugated metal envelope airship that did not need ballonets. David Schwarz had
Rigid_airship
Type of machine that uses liquid fluid power to perform work
flow to the actuator and/or motors, then return to a reservoir. The fluid is then filtered and re-pumped. The path taken by hydraulic fluid is called a hydraulic
Hydraulic_machinery
Red supergiant star in the constellation Orion
brightest in its constellation. It is a distinctly reddish, semiregular variable star whose apparent magnitude, varying between +0.0 and +1.6, with a main
Betelgeuse
Star in the constellation Monoceros
constellation Monoceros, the Unicorn. Being a new variable star, it was designated V838 Monocerotis, the 838th variable star of Monoceros. The initial light curve
V838_Monocerotis
Fictional character of the TV series Lost
2009-05-10. "2008 Emmy Awards Campaigns & Episode Submissions (Part 1)". The Envelope Forum, Los Angeles Times. 2008-03-25. Archived from the original on October
Daniel_Faraday
Type of fading for radio and other electromagnetic waves.
to one another. A TWDP-distributed envelope R follows from the following combination of elementary random variables: R = ‖ V 1 e j 2 π U 1 + V 2 e j 2
Two-wave with diffuse power fading
Two-wave_with_diffuse_power_fading
Synthesizer composed of separate modules
modulation, and variable waveshape; the voltage-controlled filter (VCF) that may have both resonance and bandwidth controls; and the envelope generator which
Modular_synthesizer
Synthesizer that uses analog circuits
and control voltage generation, including envelope trigger generation, but the main sound generating path remained analog. The MIDI interface standard
Analog_synthesizer
State in which variables of a system are unchanging in time
theory, a system or a process is in a steady state if the variables (called state variables) which define the behavior of the system or the process are
Steady_state
Architecture that adapts to the environment
environment in a dynamic way. Conventional structures have static building envelopes and therefore cannot act in response to changing weather conditions and
Climate-adaptive building shell
Climate-adaptive_building_shell
Shortest paths on a bounded deformed sphere-like quadric surface
ellipsoid's surface that they start to return toward the starting point, so that other routes are more direct, and includes paths that intersect or re-trace themselves
Geodesics_on_an_ellipsoid
Void between celestial bodies
medium by stellar winds or when evolved stars begin to shed their outer envelopes such as during the formation of a planetary nebula. The cataclysmic explosion
Outer_space
Aircraft collision avoidance system
issued that demand climb or sink rates outside the normal/safe flight envelope of an aircraft during a certain phase of flight (i.e. due to the aircraft's
Traffic collision avoidance system
Traffic_collision_avoidance_system
Device that controls current between electrodes
difference has been applied. It takes the form of an evacuated tubular envelope of glass or sometimes metal containing electrodes connected to external
Vacuum_tube
Large self-illuminated object in space
yielding phenomena including contact binaries, common-envelope binaries, cataclysmic variables, blue stragglers, and Type Ia supernovae. Mass transfer
Star
Electronic flight control system
prevent the pilot from operating outside of the aircraft's safe performance envelope. Mechanical and hydro-mechanical flight control systems are relatively
Fly-by-wire
policy, for example the Bush tax cuts of 2001 and 2011 GOP Path to Prosperity proposal, return higher benefits in terms of GDP growth and revenue increases
Dynamic_scoring
Device used to regulate and circulate air as part of an HVAC system
operate at a single speed, offer a variety of set speeds, or be driven by a variable-frequency drive to allow a wide range of air flow rates. Flow rate may
Air_handler
Removal of material from a workpiece using rotating tools
are purpose-built to facilitate milling and turning within the same work envelope. Milling is a cutting process that uses a milling cutter to remove material
Milling_(machining)
Visible star that is nearly aligned with Earth's axis of rotation
400 AD. The celestial pole will then return to the stars in constellation Draco (Thuban, mentioned above) before returning to the current constellation, Ursa
Pole_star
more specifically the emphasis of celestial mechanics). atmosphere An envelope of gases surrounding an astronomical body such as a planet and held in
Glossary_of_astronomy
Soviet fighter-interceptor aircraft introduced in 1970
МиГ-23; NATO reporting name: Flogger) is a single-engined, supersonic, variable-sweep wing fighter aircraft, designed by the Mikoyan-Gurevich design bureau
Mikoyan-Gurevich_MiG-23
Geared turbofan engine produced beginning 2007
designs included a variable-area fan nozzle (VAFN), which allows improvements in propulsive efficiency across a range of the flight envelope. However, the
Pratt_&_Whitney_PW1000G
Cast of American crime drama TV series
in the path of the bullet, to persuade her to redirect her payments from Little Carmine to Johnny Sack. When she failed to comply Phil returned with his
List of The Sopranos characters
List_of_The_Sopranos_characters
Type of heating, ventilation and air-conditioning system
pass through the building enclosure. Traditional HVAC systems, such as variable air volume (VAV) systems serving multiple zones, have potential problems
Dedicated_outdoor_air_system
Necessary condition for optimality associated with dynamic programming
their state variables, but there would probably be others. The variables chosen at any given point in time are often called the control variables. For instance
Bellman_equation
American physicist and inventor (1882–1945)
instruments when World War II intervened and changed the path of American history. He hoped to return to his experiments in Roswell after the war. Though by
Robert_H._Goddard
Stochastic volatility model used in derivatives markets
F} and σ {\displaystyle \sigma } are represented by stochastic state variables whose time evolution is given by the following system of stochastic differential
SABR_volatility_model
Definitions of terms used in amateur radio
of amplification achieved by an antenna or amplifier. Ground A common return path for electric current, or a direct physical connection to the Earth. Ground
Glossary_of_amateur_radio
British hybrid airship prototype
123 m (404 ft) and larger with a 42,450-cubic-metre (1,499,000 cu ft) envelope capacity. Operationally, the LEMV was intended to be typically flown autonomously
Hybrid Air Vehicles Airlander 10
Hybrid_Air_Vehicles_Airlander_10
Event wherein the Sun is obscured by the Moon
the lunar shadow moving over Earth's surface. The vector of the eclipse path at the midpoint of the eclipse aligning with the vector of Earth's rotation
Solar_eclipse
Closed vessel in which fluid is heated
The furnace can be situated at one end of a fire-tube which lengthens the path of the hot gases, thus augmenting the heating surface which can be further
Boiler
Reference model for network communication
inspects only the outer envelope of mail to determine its delivery. Higher layers may have the equivalent of double envelopes, such as cryptographic presentation
OSI_model
South Korean television reality show
down, left, and right by the corresponding number, but they cannot return to the path they took just before. Once the dice movement is complete, check the
Elite_League_(TV_series)
List of definitions of terms and concepts used in electrical engineering and electronics
and television sets, that combined multiple independent functions in one envelope. compensation winding A winding on a motor or generator to improve commutation
Glossary of electrical and electronics engineering
Glossary_of_electrical_and_electronics_engineering
Ancient Jewish biblical manuscripts
partially destroyed or made illegible by the glue and paper of the manila envelopes in which they were stored while in the vault. By 1958 it was noted that
Dead_Sea_Scrolls
Measure of energy in a thermodynamic system
final configuration of internal energy, pressure, and volume, not on the path taken to achieve it. In the International System of Units (SI), the unit
Enthalpy
Technology of indoor and vehicular environmental comfort
of air through open windows, doors, grilles, and other planned building envelope penetrations, and as being driven by natural and/or artificially produced
Heating, ventilation, and air conditioning
Heating,_ventilation,_and_air_conditioning
Aircraft without any human pilot on board
redundancy to minimize cost and weight. Besides, dynamic assessment of flight envelope allows damage-resilient UAVs, using non-linear analysis with ad hoc designed
Unmanned_aerial_vehicle
Committee for Small-Body Nomenclature CSE – (celestial object) circumstellar envelope, a roughly spherical planetary nebula formed from dense stellar wind if
List_of_astronomy_acronyms
American synthesizer manufacturer
circuits that performed distinctive tasks – oscillators, filters, amplifiers, envelope generators – the Moog synthesizer allowed users to connect different modules
Moog_Music
Underground heat exchanger loop that can capture or dissipate heat to or from the ground
conductivity), soil moisture content and the efficiency of the building's exterior envelope design / insulation. Generally, dry-and-low-density soil with little or
Ground-coupled_heat_exchanger
Planetary system consisting of the Sun and objects orbiting it
Solar System's galactic year. The solar apex, the direction of the Sun's path through interstellar space, is near the constellation Hercules in the direction
Solar_System
2021. "Ikai launches March 29". Gematsu. January 14, 2022. "Illmatic Envelope Swamp launches October 14 in Japan". Gematsu. Retrieved July 13, 2021.
List of Nintendo Switch games (H–P)
List_of_Nintendo_Switch_games_(H–P)
Vacuum tube used to display images
after being hit by the electron beam, providing the electrons with a return path. The electron beam passes through the aluminum coating before hitting
Cathode_ray_tube
2005 video game
enjoyable [...] This isn't a game that's going to raise any bars, push any envelopes or revolutionise any genres. But if you played and enjoyed the first game
The_Suffering:_Ties_That_Bind
Suits. Season 1. Episode 1. USA Network. According to address wrote on envelopes of letters sent to Mikado, as visible in episode 37 "Bad Faith". Drogin
List_of_Suits_characters
Gas turbine phenomenon
the ingestion of foreign objects. Aircraft operation outside its design envelope; e.g., extreme flight manoeuvres resulting in airflow separations within
Compressor_stall
Decrease in value at a rate proportional to the current value
mechanical oscillators, and used in creating ADSR envelopes in synthesizers. An overdamped system will simply return to equilibrium via an exponential decay. Beer
Exponential_decay
Large, round non-stellar astronomical object
"Growth of Jupiter: Enhancement of core accretion by a voluminous low-mass envelope". Icarus. 241: 298–312. arXiv:1405.7305. Bibcode:2014Icar..241..298D. doi:10
Planet
American stealth air superiority fighter
Combined Test Force (CTF) at Edwards. The first two aircraft conducted envelope expansion testing, such as flying qualities, air vehicle performance, propulsion
Lockheed_Martin_F-22_Raptor
Device used for microwave measurements
high-power source may be damaged by the returning wave. The power entering the slotted line is controlled by a rotary variable attenuator (4). This is followed
Slotted_line
Passive radiator – Patch bay – Path loss – Path profile – Pauli exclusion principle – PBER – PCB layout guidelines – Peak envelope power – Peltier effect –
Index_of_electronics_articles
American experimental tiltrotor aircraft
California High Desert. The XV-15 flight testing continued expanding its flight envelope. It was able to successfully operate in both helicopter and normal aircraft
Bell_XV-15
European beyond visual range air-to-air missile
average speed, a wide operational envelope from sea level to high altitude, a flexible mission envelope via active variable thrust control, relatively simple
Meteor_(missile)
Term in optics
the expression of the electric field in the equation, assuming that the envelope a ( x , z ) {\displaystyle a(x,z)} changes slowly while propagating, i
Soliton_(optics)
Four-dimensional analog of the icosahedron
together into a curved 3-dimensional surface envelope, or how they lie on the underlying surface envelope of the 24-cell's octahedral cells. For that it
600-cell
Changed position of star vs background
to each other are used as reference points to determine the path of S. The observed path is an ellipse: the projection of Earth's orbit around the Sun
Stellar_parallax
Special purpose heat exchanger
relationship between the physical size of the unit, in particular the air path distance, and the spacing of the plates. For an equal air pressure drop through
Recuperator
Propagation of information or matter faster than the speed of light
same time involve rapid attenuation of the intensity, the maximum of the envelope of a pulse may travel with a velocity above c. However, even this situation
Faster-than-light
Swedish-American physicist (1889–1976)
using the derivative of phase shift with frequency, which they called envelope delay. They applied the measurements to actual telephone circuits and noted
Harry_Nyquist
British anthology television series
worried about San Junipero' – Charlie Brooker on pushing the Black Mirror envelope". i. Archived from the original on 22 August 2020. Retrieved 30 June 2021
Black_Mirror
Chronic disease caused by bacterial infection
leprae is an aerobic, rod-shaped, acid-fast bacterium with a waxy cell envelope characteristic of the genus Mycobacterium. M. leprae and M. lepromatosis
Leprosy
Human disease caused by paramyxovirus
genome is encased by a helical capsid. The capsid is surrounded by a viral envelope that has spikes protruding from its surface. MuV particles are pleomorphic
Mumps
Computer expansion bus standard
PCI-SIG. p. 8. Archived from the original on 30 October 2021. "Pushing the Envelope with PCIe 6.0: Bringing PAM4 to PCIe" (PDF). Retrieved 16 February 2022
PCI_Express
Ethnic group
couple will be served tea, egg noodles (misua) and given red packets or envelopes containing money, commonly referred to as an ang-pao.[citation needed]
Chinese_Filipinos
Ruling political party of Russia
salary of 90,000 rubles, they also paid about $3,000 more monthly in an envelope from "socially responsible" entrepreneurs - companies that delegated their
United_Russia
German medium tank of WWII
ranges within the lethal envelope of the Tiger I's own 88 mm gun. The Soviets had already embarked on the 85-mm-gun upgrade path before encountering the
Panther_tank
Measurement indicator of fuel conversion
combustor pressure). The air system sinks are the primary gas path where turbine cooling air is returned, for example, and the oil system vent overboard. Pratt
Jet_engine_performance
Use of liquid or gaseous water in heating or cooling systems
automatic valves. The return piping, as the name suggests, takes the most direct path back to the boiler. Lower cost of return piping in most (but not
Hydronics
Sendai virus, virus of rodents
cleavage promotes the fusion of the viral lipid envelope with the cell outer membrane. In the lipid envelope of the virus located also a fusion protein (F)
Murine_respirovirus
Type of aircraft engine
described its propfan as "a small diameter, highly loaded multiple bladed variable pitch propulsor having swept blades with thin advanced airfoil sections
Propfan
Software architecture
envelope and linearized objects into linked OBJDSS envelopes. (See DDM messages.) The Client Agent interacts with the Server Agent to create a path for
Distributed Data Management Architecture
Distributed_Data_Management_Architecture
Contracting internal tasks to an external organization
company uses a "100% U.S. Based" phrase, whether within or outside their envelopes. "100% US-based customer service available 24/7" is how, in 2024, Business
Outsourcing
began to accumulate an envelope via accretion of gas from the surrounding disc at an ever-increasing rate. Once the envelope mass became about equal
Formation and evolution of the Solar System
Formation_and_evolution_of_the_Solar_System
Possible alternative biochemicals used by life forms
7M. doi:10.1017/S1473550425100037. ISSN 1473-5504. "NASA Research Shows Path Toward Protocells on Titan - NASA Science". 2025-07-14. Retrieved 2025-07-16
Hypothetical types of biochemistry
Hypothetical_types_of_biochemistry
Carrier-based multi-role fighter aircraft family
supersonic, twin-engine, tandem two-seat, twin-tail, all-weather-capable variable-sweep wing fighter aircraft. The Tomcat was developed for the United States
Grumman_F-14_Tomcat
British rigid airship destroyed in 1930
themselves. However, this resulted in the structure extending further into the envelope, thereby limiting the size of the gasbags. The specifications drawn up
R101
American defense manufacturing conglomerate
Rich. The Saturday Evening Post. Donald M. Pattillo (2001). Pushing the Envelope: The American Aircraft Industry. University of Michigan Press. pp. 225
General_Dynamics
Chinese conglomerate and holding company
industry based on its equity investments. Its associated stock-market-listed variable interest entity Tencent Holdings Ltd is incorporated in the Cayman Islands
Tencent
Speed of electromagnetic waves
because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1⁄299792458 second
Speed_of_light
Comparison of a wide range of lengths
Yellow Hypergiant Star ρ Cassiopeiae: Convection Cells and Circumstellar Envelope". arXiv:2408.02756v2 [astro-ph.SR]. Joyce, Meridith; Leung, Shing-Chi;
Orders_of_magnitude_(length)
British–French supersonic airliner
also had to provide an alternative path for excess intake of air during engine throttling or shutdowns. The variable intake features required to meet all
Concorde
Solar thermal technology
rainscreen and they also capture heat loss escaping from the building envelope which is collected in the collector air cavity and drawn back into the
Solar_air_heat
Star at the centre of the Solar System
four thermal pulses are predicted before it completely loses its outer envelope and starts to make a planetary nebula. The post-asymptotic-giant-branch
Sun
American multi-role fighter aircraft
flaperons linked to a digital flight control system regulating the flight envelope. The F-16 has a moderate wing loading, reduced by fuselage lift. The vortex
General Dynamics F-16 Fighting Falcon
General_Dynamics_F-16_Fighting_Falcon
Third planet from the Sun
September 2014. Retrieved 26 November 2014. Tewksbury, Barbara. "Back-of-the-Envelope Calculations: Scale of the Himalayas". Carleton University. Archived from
Earth
Plane curve: conic section
to the circle B, as well as the envelope of the polar lines of the points on B. Conversely, the circle B is the envelope of polars of points on the hyperbola
Hyperbola
LCCN 96067282. Brown, Capt. Eric "Winkle" (March 2011). "Pushing the Envelope". Jets Monthly. Westerham, Kent, UK: Kelsey Publishing Group. p. 49. Smith
List of accidents and incidents involving military aircraft (1950–1954)
List_of_accidents_and_incidents_involving_military_aircraft_(1950–1954)
Change in sea level due to gravity
Retrieved 3 January 2026. Byun, D.-S.; Hart, D. E. (2020). "A monthly tidal envelope classification for semidiurnal regimes in terms of the relative proportions
Tide
VARIABLE ENVELOPE-RETURN-PATH
VARIABLE ENVELOPE-RETURN-PATH
Boy/Male
Biblical
The remnant shall return.
Surname or Lastname
English
English : habitational name from Redbourn in Hertfordshire or Redbourne in Humberside (formerly Lincolnshire), named with Old English hrēod ‘reeds’ + burna ‘stream’.
Boy/Male
Native American
Antelope.
Girl/Female
American, Australian, British, Chinese, Christian, Danish, English, French, Gaelic, German, Greek, Indian, Irish, Italian, Portuguese
A Penelope; Wife of Odysseys; White Shoulder; Fionnula; Dream Weaver; Duck; Hard Working
Girl/Female
Gaelic American Greek
White shoulder. From Fionnghuala or Fionnuala.
Girl/Female
Christian & English(British/American/Australian)
Weaver
Boy/Male
Greek
Helps Odysseus return home.
Boy/Male
Greek
Helps Odysseus return home.
Female
English
Latin form of Greek Penelopeia, PENELOPE means "weaver of cunning." In mythology, this is the name of the patient wife of Odysseus who waited ten years for his return during which she refused several proposals of marriage by princes.
Boy/Male
Muslim
Wrapped in, Enveloped
Girl/Female
Indian
Return of Love
Boy/Male
American, British, English
From the Deer's Stream
Boy/Male
Indian
Wrapped in, Enveloped
Boy/Male
Anglo, British, English
Variable
Surname or Lastname
English
English : from the feminine personal name Mirabel, equated in medieval records with Latin mirabilis ‘marvellous’, ‘wonderful’ (in the sense ‘extraordinary’).
Boy/Male
British, English
A Planet
Biblical
the remnant shall return
Boy/Male
Australian, British, English, German
From the Roe-deer Brook
Girl/Female
Hebrew
Incense.
Girl/Female
Christian & English(British/American/Australian)
Return of Sound
VARIABLE ENVELOPE-RETURN-PATH
VARIABLE ENVELOPE-RETURN-PATH
Girl/Female
Gujarati, Hindu, Indian
Mermaid
Boy/Male
Australian, Danish, French, German, Greek, Latin
Farmer
Boy/Male
Irish
Derived from fear “â€manâ€â€ and gus “â€strengthâ€â€ and signifies “â€a strong warrior, virile.â€â€ According to the legend of the Cattle Raid of Cooley (read the legend) Fergus was the king of Ulster and his lover, the cunning Nessa, duped him into letting her son Conchobhar rule in his place for a year so that in years to come her son could be called “â€the son of a king.â€â€ Fergus consented but after the year Conchobhar refused to relinquish the throne and so Fergus joined Maebh in her battle against Ulster, his native province.
Girl/Female
Indian
One who speaks of, Speaker
Girl/Female
Hindu, Indian, Tamil
Roar
Boy/Male
Tamil
Lord Krishna
Male
Greek
(ΣωτήÏιος) Variant form of Greek Sotiris, SOTIRIOS means "salvation."
Female
English
Variant spelling of English Lakeisha, LAKISHA means "cassia," a bark similar to cinnamon.
Girl/Female
Indian, Tamil
Eye
Male
Greek
(Αθος) Contracted form of Greek Athanasios, ATHOS means "immortal." In mythology, this is the name of an ancient mountain god, one of the Gigantes. It is also the name of a mountain in Greece containing an ancient monastic site.
VARIABLE ENVELOPE-RETURN-PATH
VARIABLE ENVELOPE-RETURN-PATH
VARIABLE ENVELOPE-RETURN-PATH
VARIABLE ENVELOPE-RETURN-PATH
VARIABLE ENVELOPE-RETURN-PATH
n.
Alt. of Envelop
a.
Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity.
a.
Invariable.
n.
That which is variable; that which varies, or is subject to change.
imp. & p. p.
of Envelop
n.
The act of returning (intransitive), or coming back to the same place or condition; as, the return of one long absent; the return of health; the return of the seasons, or of an anniversary.
a.
Liable to vary; too susceptible of change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable.
n.
An answer; as, a return to one's question.
v. t.
To retort; to throw back; as, to return the lie.
a.
Worthy; estimable; deserving esteem; as, a valuable friend; a valuable companion.
v. t.
To give back in reply; as, to return an answer; to return thanks.
v. t.
To repay; as, to return borrowed money.
adv.
In a variable manner.
n.
An official account, report, or statement, rendered to the commander or other superior officer; as, the return of men fit for duty; the return of the number of the sick; the return of provisions, etc.
v. t.
To put a covering about; to wrap up or in; to inclose within a case, wrapper, integument or the like; to surround entirely; as, to envelop goods or a letter; the fog envelops a ship.
n.
A day in bank. See Return day, below.
v. t.
To bring, carry, send, or turn, back; as, to return a borrowed book, or a hired horse.
n.
That which envelops or surrounds; an envelop.
n.
A quantity which may increase or decrease; a quantity which admits of an infinite number of values in the same expression; a variable quantity; as, in the equation x2 - y2 = R2, x and y are variables.
v. t.
To lead in response to the lead of one's partner; as, to return a trump; to return a diamond for a club.