Graphical definitions: expanding spreadsheet languages through direct manipulation and gestures
ACM Transactions on Computer-Human Interaction (TOCHI)
Exception Handling in the Spreadsheet Paradigm
IEEE Transactions on Software Engineering - special section on current trends in exception handling—part II
Exception Handling in Workflow Management Systems
IEEE Transactions on Software Engineering - special section on current trends in exception handling—part II
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Exception handling is widely regarded as a necessity in programming languages today, and almost every programming language in current use supports some form of it. Unfortunately however, most approaches to exception handling involve constructs with unusual powers, and even deviations from the language's evaluation model. To avoid such devices in our declarative visual programming language, we have devised a full-featured approach to exception handling that fits seamlessly into languages that are declarative and visual. Using this approach allows designers of declarative visual programming languages to provide the expressive power previously available only through complex exception handling techniques.