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Welcome to ArcGIS Desktop Help
Copyright information
GIS Dictionary
What's new in ArcGIS
Getting started
Fundamentals of GIS data
Introducing ArcGIS Desktop
Tutorials
Tutorials
Getting Started Quickstart tutorial index
3D Analyst tutorial index
Animation in ArcMap tutorial index
ArcGIS Publisher tutorial index
ArcReader tutorial index
ArcScan tutorial index
Building a Geodatabase tutorial index
Data interoperability tutorial index
Database servers tutorial index
Editing geodatabases tutorial index
Editing GIS features tutorial index
Geocoding tutorial index
Geoprocessing tutorial index
Linear Referencing tutorial index
Maplex tutorial index
Representations tutorial index
Spatial Analyst tutorial index
StreetMap tutorial index
Tracking Analyst tutorial index
Toolbars
Getting more help
Using this help system
Getting help within the applications
ArcGIS Desktop Documentation Library
Accessing ESRI Software Training
Using the GIS Dictionary
Contacting Technical Support
Support for users located outside the United States
Contacting ESRI
Map projections and coordinate systems
Getting started with map projections
Geographic coordinate systems
Projected coordinate systems
About projected coordinate systems
About map projections
Projection types
Planar projections
Conic projections
Cylindrical projections
Other projections
Projection parameters
Geographic transformations
Geographic transformation methods
Equation-based methods
Grid-based methods
Supported map projections
Vertical coordinate systems
About vertical coordinate systems
Vertical datums
Geoid
Mapping and visualization
Editing and data compilation
An overview of editing and data compilation
Getting started with editing
Common editing tasks
Common point editing tasks
Common line editing tasks
Common polygon editing tasks
Common annotation editing tasks
Common multipoint editing tasks
Editing data in a different projection
Creating new features
About creating new features
Creating point features and vertices
Creating lines and polygons
Creating segments using angles and lengths
Creating segments using angles from existing segments
Creating segments that are circular arc curves
Creating segments by tracing features
Creating buffers
Mirroring features
Combining features from different layers
Intersecting features
Merging and separating features
Copying parallel line features
Creating a fillet curve between two lines
Creating cul-de-sac lines
Creating lines with the Traverse window
Creating lines with the 2-Point Line window
Creating lines with the Offset Line window
Editing existing features
Editing attributes
Editing attributes
Copying and pasting attributes
Deleting attributes
Editing with default values and attribute domains
About updating data using SQL
Editing annotation
Editing dimension features
Using a digitizer
About digitizing
An overview of preparing to digitize
Registering the paper map
Digitizing features on a paper map
Spatial adjustment
An overview of spatial adjustment
Adding the Spatial Adjustment toolbar
Setting up the spatial adjustment
Working with links
Working with link files and control point files
Previewing and performing the adjustment
Transferring attributes between features
Editing topology
About topology
Topology rules
Topology error fixes
Basic topology tasks
Creating a map topology
Editing features in a topology
Editing shared geometry
Topology validation
Topology errors and exceptions
Correcting topology errors
Finding features with shared topology elements
Clearing selected topology elements
Changing the symbology for topology features
Making new features with topology tools
Editing relationships and related objects
About editing relationships and related objects
Editing relationships and related objects
COGO
Geoprocessing
Geoprocessing tool reference
Geodatabases and ArcSDE
Data management with ArcCatalog
Data support in ArcGIS
Extensions
Geocoding and address management
Linear referencing
Network analysis
Mobile GIS
Interoperability and standards support
Customizing and developing with ArcGIS
Guide to data that comes with ArcGIS
Licensing and desktop administration
ArcGIS Image Server
GIS Servers and services