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About the TOOL_ERR built-in package

In addition to using exceptions to signal errors, some built-in packages (for example, the DEBUG built-in package) provide additional error information. This information is maintained in the form of an "error stack".

The error stack contains detailed error codes and associated error messages. Errors on the stack are indexed from zero (oldest) to n-1 (newest), where n is the number of errors currently on the stack. Using the services provided by the TOOL_ERR built-in package, you can access and manipulate the error stack.

See also

TOOL_ERR built-in package

TOOL_ERR built-in package examples

About built-in packages