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7.25 Trap Library

The trap library objects export error trapping and related utilities.

See Limiting The Scope Of Errors.

By default, errors in program execution result in the execution termination. More descriptively, errors are propagated from local scope in which they occurred (usually expression scope) to the global scope (the program scope), terminating the scopes in the process. The interfaces exposed by the trap library objects allow containing the errors at function level.