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| 9 Conditions 9.1 Condition System Concepts 9.1.4 Signaling and Handling Conditions 9.1.4.2 Restarts ### 9.1.4.2.1 Interactive Use of Restarts For interactive handling, two pieces of information are needed from a restart: a report function and an interactive function. The report function is used by a program such as the debugger to present a description of the action the restart will take. The report function is specified and established by the `:report-function` keyword to restart-bind or the `:report` keyword to restart-case. The interactive function, which can be specified using the `:interactive-function` keyword to restart-bind or `:interactive` keyword to restart-case, is used when the restart is invoked interactively, such as from the debugger, to produce a suitable list of arguments. invoke-restart invokes the most recently established restart whose name is the same as the first argument to invoke-restart. If a restart is invoked interactively by the debugger and does not transfer control but rather returns values, the precise action of the debugger on those values is implementation-defined.

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