azimuth axial gradient what is
Azimuth, Axial Gradient, Avi, Average Bit Rate, Av/c, Autosizing Behavior, Auto-Repeat, Automator.

Apple Mac OS developers glossary letter A

  • What is AAC What is lossy, perceptual coding scheme, originally a component of the MPEG-2 standard as MPEG-2 AAC. Defined in 1997 as part of ISO/IEC 13818-7
  • What is About window What is A modeless window that displays an application’s version and copyright information
  • What is absolute object specifier What is information to identify an object or objects uniquely. For an object specifier to an application object to be complete, its outermost
  • What is absolute position What is A specific position, given in coordinates, for the origin of each character or glyph in a line of text. Compare absolute object specifier
  • What is abstraction What is interface to some functionality from the underlying implementation in such a way that the implementation can be changed without changing
  • What is abstract type What is that defines general characteristics of a family of documents. Each abstract type has corresponding concrete types. See also concrete type
  • What is AC-3 What is coding format developed by Dolby Laboratories, Inc. Sometimes called Dolby Digital or Dolby Surround AC-3. See also lossy compression
  • What is Accelerate framework What is An OS X framework that serves as a container for several other frameworks related to optimization and high performance
  • What is access control entry What is See ACE
  • What is access control list What is See ACL
  • What is accessibility What is and information technologies by people with disabilities. OS X provides support for users with disabilities in the form of VoiceOver
  • What is access layer What is webobjects.eoaccess , which include the model-level classes EOEntity, EOAttribute, and EORelationship. You usually do not work with classes
  • What is access object What is An opaque data structure containing one or more access control lists (ACLs). Each keychain item has one access object
  • What is access permissions What is See permissions
  • What is access rights What is See permissions
  • What is accumulating attribute group What is A set of attribute choices in which the user can select multiple items, such as Bold and Italic. Compare mutually exclusive attribute group
  • What is ACE What is ACL that associates a user or group with a set of permissions and specifies whether each permission is allowed or denied. See also Unicode
  • What is ACL What is describing what must happen (display a confirmation dialog, ask for a password, and so forth) in order to permit a specific operation to
  • What is action What is the sending of a message from one object to another when a certain user action occurs. For example, when a user presses a button, the
  • What is action button What is text in a dialog. The action button is in the lower-right corner of a dialog. It is often, but not always, the default button
  • What is action line What is In Xcode, the code line indicated by the pointer at the time you choose a debugging command from the shortcut menu
  • What is action object What is In Xcode, the object on which you want to perform an action
  • What is activate What is To bring a running application to the front of the screen, allowing the user to interact with it. Compare launch
  • What is active What is In iOS, used to describe an audio session state in which playback or recording can proceed. Compare inactive
  • What is active build configuration What is The build configuration Xcode uses to build the active target and any targets it depends upon. See also build configuration
  • What is active driver What is advanced power management tasks, such as determining device idleness and performing pre-shutdown tasks. Compare passive driver
  • What is active end What is The point at which the user releases the mouse button when selecting a range of text or other items. Compare anchor point
  • What is active executable What is The executable environment that Xcode uses when you run or debug a product. See also executable environment
  • What is active extension What is A filename extension claimed by at least one application registered with Launch Services. Compare valid extension
  • What is active SDK What is The SDK used to build a product and the runtime environment on which the product is to run. See also SDK family
  • What is active target What is The target that Xcode uses when you build the project. See also string atom
  • What is active window What is current task. Active windows are distinguished from inactive windows by the look of the title bar and the window controls. The active
  • What is adaptor layer What is In WebObjects, a sublayer of the access layer that provides classes that communicate directly with data sources
  • What is adaptor What is connects your application to a particular database server. For each type of server you use, you need a separate adaptor. WebObjects
  • What is ADC What is primary source for technical and business resources and information for anyone developing for Apple’s software and hardware platforms
  • What is addition schemat What is A model for extending a continuous selection using Shift-click, in which new text is added to a selection. Compare fixed-point model
  • What is Address Book What is addresses, phone numbers, and other contact-related information. OS X provides the Address Book application for users to manage contact
  • What is address space What is a given task (the task may be the kernel). In OS X, processes do not share the same address space. The address spaces of multiple
  • What is admin group What is privileges. For example, only members of the admin group can open locked system preferences or install software. See also wheel group
  • What is administrator What is installs OS X is automatically assigned to the admin group. An administrator has fewer privileges than root, but more privileges than a
  • What is ADPCM What is variant of pulse-code modulation , and an extension of DPCM , that varies quantization step size to minimize bit rate for a given dynamic
  • What is advance delta What is The distance between the end of one glyph’s advance and the next glyph’s real position
  • What is advance height What is The distance from the top of a glyph to the bottom of the glyph, including the top-side bearing and bottom-side bearing
  • What is advance width What is measured from its origin to the origin of the next glyph on the line, including the side bearings on both sides
  • What is AES What is international society of audio professionals that has established many important standards related to digital audio
  • What is AES-3 What is defined by the Audio Engineering Society, originally published in 1992. Also called the AES/EBU interface. Equivalent to IEC 60958 Part 4
  • What is AES encryption What is A Federal Information Processing Standard (FIPS), described in FIPS publication 197. AES has been adopted by the US government for the
  • What is AES/EBU interface What is An alternate name for AES-3 . See also EBU
  • What is 'aete' resource What is traditional mechanism for providing scriptability information in a Carbon application. An 'aete' resource can also be included in
  • What is AFP What is Apple Filing Protocol. A file-sharing protocol, used by AppleShare servers and clients
  • What is aggregate device What is interconnected to allow the set to be addressed by software applications as a single device. See also device
  • What is aggregate target What is necessarily dependent on each other, that does not produce a product or contain build rules or information property list entries. An
  • What is AGL framework What is Apple Graphics Library framework. The Apple framework for using OpenGL graphics in Mac apps written in the Carbon environment
  • What is AIAT What is Classic Mac OS, an object-oriented information access engine that contained a collection of tools for indexing, searching, and analyzing
  • What is AIFC What is for Compression. An extension of AIFF that supports storage of either compressed or uncompressed audio data. May also be abbreviated as
  • What is AIFF What is digital audio file format developed by Apple, Inc., based on the Interchange File Format (IFF) developed by Electronic Arts, Inc. The audio
  • What is arbitrary reference form What is In AppleScript, a reference form that specifies an arbitrary object in a container
  • What is alert What is or an application needs to communicate information to the user. Alerts provide messages about error conditions and warn users about
  • What is algorithm What is some task. In cryptography, refers to a sequence of actions, usually mathematical calculations, performed on data to encrypt or decrypt it
  • What is alias What is folders in Mac OS Standard (HFS) and Mac OS Extended (HFS+) file systems. An alias allows multiple references to files and folders without
  • What is aliased What is Said of graphics whose edges appear jagged; can be remedied by performing anti-aliasing operations
  • What is aliasing What is artifacts into digital information during processing operations. In graphics, aliasing can cause edges to appear jagged. In audio, aliasing
  • What is alignment What is text with respect to the left and right edges of the text area. Alignment can be left, right, centered, or justified (flush on both left
  • What is alpha What is Quartz uses to determine how to composite newly painted objects to the existing page. At full intensity (alpha =1.0 ), newly painted
  • What is alpha channel What is opaque a given pixel is. Unlike the red, green, and blue channels, which specify the intensity of their respective colors, the alpha
  • What is alternate track What is data for another track. QuickTime chooses one track to be used when the movie is played. The choice may be based on such considerations as
  • What is Anatomical Transfer Function What is See HRTF
  • What is anchor What is within an HTML file. When loading the documentation node’s landing page, Xcode scrolls to the location of this anchor. See also
  • What is anchor certificate What is valid, which can then be used to verify other certificates. Anchor certificates can include root certificate s, cross certified
  • What is anchor point What is mouse button to begin selecting a range of text or other items by dragging through them. The anchor point is at one corner of the range of
  • What is angle What is scene, usually recorded from a certain camera angle. Different angles can be chosen while viewing the scene
  • What is angled caret What is A caret whose angle in relation to the baseline of the display text is equivalent to the slant of the glyphs making up the text
  • What is animation What is A visual technique that provides the illusion of motion by displaying a collection of images in rapid sequence
  • What is animation proxy What is An object that stands in for another object and provides animation capabilities without significantly impacting the original object’s API
  • What is anonymous memory What is pager to swap files, rather than by a persistent object. Anonymous memory is zero-initialized and exists only for the life of the task. See
  • What is anti-aliasing What is in images or sound caused by aliasing. During frequency sampling, aliasing generates a false (alias) frequency along with the correct one
  • What is API What is set of classes, protocols, methods, functions, and data structures that define the interface (calling convention) by which an application
  • What is API reference search What is A search type that looks through the available reference for a symbol name
  • What is API-based adaptor What is interface specific to a particular web server. It allows CGI-like tasks to run as part of the main server process, avoiding the creation
  • What is AppKit What is application’s user interface. The AppKit provides a basic program structure for applications that draw on the screen and respond to events
  • What is AppKit framework What is Defines classes to support a graphical, event-driven user interface for applications. See also Cocoa framework
  • What is Apple Core Audio Format What is See CAF
  • What is Apple Developer Connection What is See user focus
  • What is Apple event What is that conforms to the Apple Event Interprocess Messaging Protocol (AEIMP). An Apple event typically consists of a message from an
  • What is Apple Event Manager What is The OS X API for creating and sending Apple events, and for receiving, extracting information from, and responding to them
  • What is Apple event translator What is scriptability information supplied by an application to evaluate an Apple event received by the application. In many cases, an Apple event
  • What is Apple Help What is The component that enables applications to display HTML files in Help Viewer, a simple browser
  • What is architecture-specific build setting What is In Xcode, options for specific architectures, such as PowerPC or Intel
  • What is Apple Information Access Toolkit (AIAT) What is information access engine that contained a collection of tools for indexing, searching, and analyzing large volumes of documents. Search
  • What is Apple Lossless What is A compressed, lossless digital audio encoding format defined by Apple, Inc. See also lossless compression
  • What is Apple menu What is available to users at all times, regardless of which application is active. It is the leftmost menu in the menu bar
  • What is Apple Public Source License What is Apple’s Open Source license, available at http://www.apple.com/publicsource . Darwin is distributed under this license. See also open source
  • What is apple_ref What is An informal name for a token identifier that uses the prefix //apple_ref. See also token identifier
  • What is AppleScript What is A scripting language that makes possible direct control of scriptable applications and scriptable parts of OS X
  • What is AppleScript command What is A script command provided by AppleScript. AppleScript commands do not have to be included in tell statements
  • What is AppleScript component What is implements the AppleScript scripting language. A scripting component provides services for compiling and executing scripts (and relies on
  • What is AppleScript Kit What is A framework that supplies advanced Cocoa scripting support and other features required by AppleScript Studio
  • What is AppleScript object What is A distinct object in an application or its documents that can be specified in a script
  • What is AppleScript object class What is A category for AppleScript objects that share characteristics, such as properties and elements
  • What is AppleScript object schemat What is given application, specifies the classes of objects a scripter can work with in scripts, the accessible properties of those objects, and
  • What is AppleScript script file What is A file with the extension .applescript that contains statements in the AppleScript scripting language
  • What is AppleScript Studio What is application framework that combines features from AppleScript, Xcode, Interface Builder, and the Cocoa application framework to provide a
  • What is AppleScript Studio application What is A Mac app that combines AppleScript scripts and Cocoa user-interface objects
  • What is AppleScript text editor What is AppleScript script files (files with the extension .applescript ). The editor relies on the osacompile shell tool to compile scripts
  • What is AppleTalk What is A suite of network protocols that is standard on Macintosh computers and can be integrated with other network systems, such as the Internet
  • What is application What is A specific style of program that displays a graphical interface to the user
  • What is application bundle What is A bundle containing the executable code of an application and its associated resources
  • What is application command What is scriptable application to provide access to a scriptable feature. An application command must either be included in a tell statement or
  • What is application file What is A file containing the executable code of an application
  • What is application font What is The font used as the default for user-created content. It is defined by each script system
  • What is application host What is A computer capable of running application instances
  • What is application ID What is application or a set of iPhone applications from one vendor. They are similar to bundle identifiers. This is an example application ID
  • What is Application Kit What is See AppKit
  • What is application menu What is to the application as a whole, rather than to a specific document or other window. The application menu for the current active application
  • What is application-modal What is anything else within the application until the window is dismissed. Compare document-modal , system modal
  • What is application-modal dialog What is performing any operations within the owner application other than those in the dialog. See also document-modal dialog , sheet , system
  • What is application object What is or its documents and managed by the application. (2) An object (of the WOApplication class) that represents a single instance of a
  • What is application package What is other resources that make up a Mac app. Application packages make it easy for users to move applications in their file systems. The
  • What is application packaging What is prescribed directory locations inside application bundles. Application package is sometimes used synonymously with application bundle
  • What is application programming interface What is See API
  • What is application server What is A JBoss instance, which is started through Server Admin
  • What is application window What is The primary window of an application that is not document-based
  • What is Aqua What is The overall appearance and behavior of Mac apps
  • What is Aqua guidelines What is appearance and behavior of Mac apps. These guidelines bring a unique look to applications, integrating color, depth, clarity, translucence
  • What is ARB What is Architecture Review Board. This group oversees the OpenGL specification and extensions to it
  • What is arrow keys What is down, left, right) used to move the insertion point or change the selection. They can also be used with the Shift key to extend or shrink a
  • What is ascent line What is corresponds approximately to the tops of the uppercase letters in the font. Uppercase letters are chosen because, among the regularly used
  • What is ASCII What is Interchange. A 7-bit character set (commonly represented using 8 bits) that defines 128 unique character codes. See also Unicode
  • What is aspect ratio What is For example, a 4:3 aspect ratio means the horizontal size is a third again wider than the vertical size. Every title on a DVD is authored
  • What is assignment statement What is An AppleScript statement that assigns a value to a variable. Assignment statements use the copy or set commands
  • What is asymmetric keys What is one used for encrypting and the other used for decrypting a message or other data. See also public key cryptography . Compare symmetric
  • What is asynchronous What is one of two ways to stop an audio queue. Asynchronous stopping happens after all queued buffers have been played or recorded. (2) In digital
  • What is asynchronous design approach What is application around blocks of code that can be run concurrently with an application’s main thread or other threads of execution
  • What is asynchronous launch What is returns immediately to the calling program, without waiting for the launched application to complete its launch sequence . Compare
  • What is asynchronous progress indicator What is A small round indeterminate progress indicator. It is usually visible only while active
  • What is ATF What is Anatomical Transfer Function. See HRTF
  • What is atom What is resource, sprite, or other QuickTime data structure. There are a number of different atom types, including movie atoms, track atoms, and
  • What is atom container What is A tree-structured hierarchy of QT atoms. See also QT atom
  • What is atom ID What is identifies an atom among other child atoms of the same parent atom. The root atom has an atom ID value of 0x0001. See also child atom
  • What is atom type What is the data type of an atom. It is normally an OSType value, rendered by four ASCII characters. An atom’s data type helps determine how the
  • What is ATSUI What is A technology that enables the rendering of Unicode-encoded text with advanced typographic features. ATSUI automatically handles many of
  • What is ATSUI style mask What is A byte-length mask with one bit set for each ATSUI-supported style to be applied
  • What is attach What is In OpenGL, an operation that establishes a connection between two existing objects. Compare bind
  • What is attached editor What is A text editor pane in the Xcode Project window
  • What is attaching What is The process of starting a debugging session on a process that’s already running and was not launched by Xcode
  • What is attachment What is with a video frame. This attachment, specified by a key-value pair, can hold any sort of information relevant to the frame, such as a
  • What is attribute What is that is a simple value, such as a scalar, string, or Boolean value, or to immutable objects such as NSColor and NSNumber objects. (2) In
  • What is audio file stream What is type AudioFileStreamID, which represents data obtained from a TCP stream and supports manipulation of that data. See also TCP/IP
  • What is audio processing graph What is comprising an interconnection of audio units. Also called an AUGraph or graph. Core Audio represents such an interconnected network as a
  • What is audio queue What is object of type AudioQueueRef, used for recording or playing back audio. There are two distinct types of audio queue. A recording audio
  • What is audio queue buffer What is structure used as a container for transient blocks of audio data being played or recorded. An audio queue buffer is managed by the audio
  • What is audio session What is represents audio behavior for an application, in context, on an iPhone or iPod touch. An audio session has a category and can be active or
  • What is audio session category What is See category
  • What is audio unit What is that adds an audio feature to a Mac app. Audio units can provide effects such as filtering and reverb, MIDI-based music synthesis, audio
  • What is AUGraph What is See audio processing graph
  • What is AUHAL What is interface with hardware input or output, so named because it interacts with the HAL (Hardware Abstraction Layer
  • What is authentication What is something the user has, knows, or is. For example, a user knows information such as a name and password. The user may have something
  • What is authentication server What is authentication information and that can authenticate users. For example, an authentication server might verify a user’s identity by
  • What is authorization What is a user or a server gets the right to perform a privileged operation . (Authorization can also refer to the right itself, as in “Bob has the
  • What is authorization option What is Security Server how to proceed with a request. Options include requesting preauthorization, requesting partial authorization, appending
  • What is authorization reference What is A reference used by the Security Server to access an authorization session associated with a process
  • What is Authorization Services What is control of privileged operations, such as accessing restricted areas of the operating system and self-restricted parts of your Mac app
  • What is authorization tag What is ACL ) that specifies an operation that can be done with that keychain item, such as decrypting or authenticating
  • What is auto-key event What is An event indicating the user has held a key down for a certain amount of time
  • What is automatic guide What is spacing required to meet the appropriate interface guidelines for the target platform. This type of guide appears and disappears
  • What is Automator action What is A loadable bundle that performs discrete tasks that users can link together in a workflow using the Automator application
  • What is auto-repeat What is numerous instances of the same character by holding down its key rather than pressing the key over and over. Users can make adjustments to
  • What is autosizing behavior What is automatically adjusts the size and position of views during resize operations based on a set of options. See also spring , strut
  • What is AV/C What is published by the IEEE , that provides a music and audio device command protocol over FireWire (IEEE 1394) connections
  • What is average bit rate What is representation that, while allowing variations in bit rate from frame to frame, maintains a specific average bit rate over a long time
  • What is AVI What is container file format defined by Microsoft Corporation in 1992. AVI is a specialization of the RIFF format, which in turn is based on IFF
  • What is axial gradient What is between two defined end points. All points that lie on a line perpendicular to the axis have the same color value. Also called a linear
  • What is azimuth What is the real or apparent horizontal angle of an audio source referenced to a line drawn from the listener’s head to a point directly ahead of

Definitions for Mac OS developers

Apple library, Mac for software engineers.

Apple Azimuth, Axial Gradient, Avi, Average Bit Rate, Av/c, Autosizing Behavior, Auto-Repeat, Automator Action, Automatic Guide, Auto-Key Event, Authorization Tag OS Mac.

What is Azimuth, Axial Gradient, Avi, Average Bit Rate, Av/c for developers.