catch Element

The <catch> element is a child element of the <try> step that specifies the steps to execute in the event that a typical error occurs while executing the steps of the <block> element. It may contain any number of steps that are permitted within the scope of the block containing the <try> step.

The <catch> element serves both to suppress typical errors of the <block> element, and to define typical error recovery actions. Note that it may be empty, in which case it serves only to suppress typical errors.