Although coding an application for WebClient closely resembles coding an application for the ABL client, WebClient provides several additional features you can take advantage of.

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Using the CODEBASE-LOCATOR handle and its attributes
Once the application configuration file contains the codebase server description, WebClient makes the description available, to the client at run time, as attributes of the CODEBASE-LOCATOR handle.
Checking application registry access
Managing application server connections
Implementing single sign-on
Using WebClient authentication dialogs
Using URLs in PROPATH in WebClient for image file downloads
There can be URLs in the PROPATH environment variable of a WebClient client. If there are, and the client executes the SEARCH function or the LOAD-IMAGE( ) method, the URL pathnames are processed along with the other pathnames included in the PROPATH.
Compiling the WebClient application
When you compile ABL procedures for your WebClient application, the compiler generates an r-code signature value, a fixed-length value that is unique for the exact contents of a given source code file.

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