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Working with styles and symbols

ArcWeb Services use styles and symbols to determine how features appear on a map. The three major ArcWeb components that determine appearance are

Style—The set of symbols that determines the appearance of layers in a map service, including how the features of a layer class are represented at different scales. There are two types of styles:

Simple style—The same symbol is used to display the features in a layer class at all scale ranges.
Smart style—Different symbols can be used to display the features in a layer class at different scale ranges. You set up a smart style by using the Scale Palette to define scale ranges.

Symbols—The individual elements of a style. Symbols are graphics that represent a geographic feature or a class of features. Symbols can look like what they represent (such as tiny trees, railroads, or houses), or they can be characters or abstract shapes (points, lines, polygons). Symbols are usually explained in a map legend.
Style sheet—A collection of predefined styles associated with all ArcWeb layer classes. For each style sheet, every ArcWeb layer class has an associated style. You can generate maps using various style sheets to change how the features in the ArcWeb layer classes appear on the map. Style sheets are defined by ESRI and cannot be modified.