Information Commands - SBCL 1.0.31 User Manual
Description: SBCL 1.0.31 User Manual

Next: Function Tracing, Previous: Exiting Commands, Up: Debugger

### 5.8 Information Commands

Most of these commands print information about the current frame or function, but a few show general information.

— Debugger Command: help
— Debugger Command: ?

> Displays a synopsis of debugger commands.

— Debugger Command: describe

> Calls `describe` on the current function and displays the number of local variables.

— Debugger Command: print

> Displays the current function call as it would be displayed by moving to this frame.

— Debugger Command: error

> Prints the condition given to `invoke-debugger` and the active proceed cases.

— Debugger Command: backtrace [n]

> Displays all the frames from the current to the bottom. Only shows n frames if specified. The printing is controlled by `*debug-print-variable-alist*`.