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Note: This manual has been updated in April 2009. See the Revision History table at the beginning of the attached document for a list of updates.
This manual describes ABL (Advanced Business Language), which is the OpenEdge® programming language for building business applications. It covers all ABL statements, functions, phrases, operators, preprocessor directives, special symbols, widgets, handles, classes, interfaces, attributes, methods, properties, and events.
This book is intended for programmers who develop applications using ABL and for anyone who needs to read and understand ABL code.