Prompts the user to select an item or items from a choice.
prompts the user with a choice. The user's selection is normally returned by the prompter.
, then it must be a function with a lambda list that accepts two arguments. The
function is called with the values that would normally be returned by
. On Cocoa, passing
causes the dialog to be made as a window-modal sheet and
returns immediately, leaving the dialog on the screen. The with-dialog-results macro provides a convenient way to create a