扩展（Extension）是Eclipse中一个关键的机制，plug-in利用扩展向Eclipse平台添加新功能。Eclipse平台提供了一些扩展点，可以使用下列扩展点来扩展平台基础结构的功能：
Platform runtime
org.eclipse.core.contenttype.contentTypes
org.eclipse.core.runtime.adapters
org.eclipse.core.runtime.applications
org.eclipse.core.runtime.contentTypes
org.eclipse.core.runtime.preferences
org.eclipse.core.runtime.products
org.eclipse.equinox.preferences.preferences
Workspace
org.eclipse.core.resources.builders
org.eclipse.core.resources.fileModificationValidator
org.eclipse.core.resources.markers
org.eclipse.core.resources.moveDeleteHook
org.eclipse.core.resources.natures
org.eclipse.core.resources.refreshProviders
org.eclipse.core.resources.teamHook
org.eclipse.core.filesystem.filesystems
Platform text
org.eclipse.core.filebuffers.annotationModelCreation
org.eclipse.core.filebuffers.documentCreation
org.eclipse.core.filebuffers.documentSetup
org.eclipse.ui.editors.annotationTypes
org.eclipse.ui.editors.documentProviders
org.eclipse.ui.editors.markerAnnotationSpecification
org.eclipse.ui.editors.markerUpdaters
org.eclipse.ui.editors.templates
org.eclipse.ui.workbench.texteditor.quickDiffReferenceProvider
org.eclipse.ui.workbench.texteditor.spellingEngine
Workbench
org.eclipse.ui.acceleratorConfigurations
org.eclipse.ui.acceleratorScopes
org.eclipse.ui.acceleratorSets
org.eclipse.ui.actionDefinitions
org.eclipse.ui.actionSetPartAssociations
org.eclipse.ui.actionSets
org.eclipse.ui.activities
org.eclipse.ui.activitySupport
org.eclipse.ui.bindings
org.eclipse.ui.browser.browsers
org.eclipse.ui.browserSupport
org.eclipse.ui.commands
org.eclipse.ui.commandImages
org.eclipse.ui.contexts
org.eclipse.ui.decorators
org.eclipse.ui.dropActions
org.eclipse.ui.editorActions
org.eclipse.ui.editors
org.eclipse.ui.elementFactories
org.eclipse.ui.encodings
org.eclipse.ui.exportWizards
org.eclipse.ui.fontDefinitions
org.eclipse.ui.handlers
org.eclipse.ui.helpSupport
org.eclipse.ui.ide.filesystemSupport
org.eclipse.ui.ide.markerHelp
org.eclipse.ui.ide.markerImageProviders
org.eclipse.ui.ide.markerResolution
org.eclipse.ui.ide.markerSupport
org.eclipse.ui.navigator.linkHelper
org.eclipse.ui.navigator.navigatorContent
org.eclipse.ui.navigator.viewer
org.eclipse.ui.ide.projectNatureImages
org.eclipse.ui.ide.resourceFilters
org.eclipse.ui.importWizards
org.eclipse.ui.intro
org.eclipse.ui.keywords
org.eclipse.ui.menus
org.eclipse.ui.newWizards
org.eclipse.ui.perspectiveExtensions
org.eclipse.ui.perspectives
org.eclipse.ui.popupMenus
org.eclipse.ui.preferencePages
org.eclipse.ui.preferenceTransfer
org.eclipse.ui.presentationFactories
org.eclipse.ui.propertyPages
org.eclipse.ui.startup
org.eclipse.ui.systemSummarySections
org.eclipse.ui.themes
org.eclipse.ui.viewActions
org.eclipse.ui.views
org.eclipse.ui.views.properties.tabbed.propertyContributor.html
org.eclipse.ui.views.properties.tabbed.propertySections.html
org.eclipse.ui.views.properties.tabbed.propertyTabs.html
org.eclipse.ui.workingSets
Team
org.eclipse.team.core.fileTypes
org.eclipse.team.core.ignore
org.eclipse.team.core.projectSets
org.eclipse.team.core.repository
org.eclipse.team.ui.configurationWizards
org.eclipse.team.ui.synchronizeParticipants
org.eclipse.team.ui.synchronizeWizards
Debug
org.eclipse.debug.core.breakpoints
org.eclipse.debug.core.launchConfigurationComparators
org.eclipse.debug.core.launchConfigurationTypes
org.eclipse.debug.core.launchDelegates
org.eclipse.debug.core.launchers
org.eclipse.debug.core.launchModes
org.eclipse.debug.core.logicalStructureTypes
org.eclipse.debug.core.processFactories
org.eclipse.debug.core.sourceContainerTypes
org.eclipse.debug.core.sourceLocators
org.eclipse.debug.core.sourcePathComputers
org.eclipse.debug.core.statusHandlers
org.eclipse.debug.core.watchExpressionDelegates
org.eclipse.debug.ui.breakpointOrganizers
org.eclipse.debug.ui.consoleColorProviders
org.eclipse.debug.ui.consoleLineTrackers
org.eclipse.debug.ui.contextViewBindings
org.eclipse.debug.ui.debugModelContextBindings
org.eclipse.debug.ui.debugModelPresentations
org.eclipse.debug.ui.launchConfigurationTabGroups
org.eclipse.debug.ui.launchConfigurationTypeImages
org.eclipse.debug.ui.launchGroups
org.eclipse.debug.ui.launchShortcuts
org.eclipse.debug.ui.memoryRenderings
org.eclipse.debug.ui.sourceContainerPresentations
org.eclipse.debug.ui.stringVariablePresentations
org.eclipse.debug.ui.variableValueEditors
Console
org.eclipse.ui.console.consoleFactories
org.eclipse.ui.console.consolePageParticipants
org.eclipse.ui.console.consolePatternMatchListeners
User Assistance
org.eclipse.help.contentExtension
org.eclipse.help.contentProducer
org.eclipse.help.contexts
org.eclipse.help.index
org.eclipse.help.toc
org.eclipse.help.base.activitySupport
org.eclipse.help.base.browser
org.eclipse.help.base.luceneAnalyzer
org.eclipse.help.base.luceneSearchParticipants
org.eclipse.help.ui.searchEngine
org.eclipse.ui.cheatsheets.cheatSheetContent
org.eclipse.ui.cheatsheets.cheatSheetItemExtension
org.eclipse.ui.intro.config
org.eclipse.ui.intro.configExtension
Language Toolkit
org.eclipse.ltk.core.refactoring.refactoringContributions
org.eclipse.ltk.core.refactoring.copyParticipants
org.eclipse.ltk.core.refactoring.createParticipants
org.eclipse.ltk.core.refactoring.deleteParticipants
org.eclipse.ltk.core.refactoring.moveParticipants
org.eclipse.ltk.core.refactoring.renameParticipants
org.eclipse.ltk.ui.refactoring.changePreviewViewers
org.eclipse.ltk.ui.refactoring.statusContextViewers
Other
org.eclipse.ant.core.antProperties
org.eclipse.ant.core.antTasks
org.eclipse.ant.core.antTypes
org.eclipse.ant.core.extraClasspathEntries
org.eclipse.compare.contentMergeViewers
org.eclipse.compare.contentViewers
org.eclipse.compare.streamMergers
org.eclipse.compare.structureCreators
org.eclipse.compare.structureMergeViewers
org.eclipse.core.expressions.propertyTesters
org.eclipse.core.variables.dynamicVariables
org.eclipse.core.variables.valueVariables
org.eclipse.search.searchPages
org.eclipse.search.searchResultSorters
org.eclipse.search.searchResultViewPages
org.eclipse.search.textSearchEngine
org.eclipse.search.textSearchQueryProvider
org.eclipse.ui.externaltools.configurationDuplicationMaps
org.eclipse.update.core.featureTypes
org.eclipse.update.core.installHandlers
org.eclipse.update.core.siteTypes
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