Error Recovery Assistance

The unexpected input indicated in the error message has been
discarded.  Any remaining input can still be processed if you
so desire.  You can insert, delete, continue with the
remainder of input, or backup (to stop entering the current
parameter).

The <E> added to the normal prompt indicates that you are
recovering from an error and therefore have the following
special options:

Normal Typing:  Insert input and then return to normal
           processing (just type what you want inserted).

Control-B: Leave the current Parameter and then continue
           by selecting another error recovery option.

Conrol-D:  Delete the next input word and then continue
           by selecting another error recovery option.
           If all input has been deleted, a final Control-D
           will close a parameter input file if one is in use.

RETURN:    Process remaining input and return to
           normal interaction.  (Including unprocessed
           lines of a parameter input file.)

Control-X: Discard all remaining input (including parameter
           file input) and return to normal processing.
           This is the same as many Control-D's followed
           by 'RETURN'.

r backup