Minor issue: How does replaying a text output record (or any record that maintains the
cursor position) affect the cursor position of the stream? It is probably that case that replay
should not affect the cursor position. | SWM

=> erase-output-record record stream [Generic Function]
Erases the output record record from the output recording stream stream, removes record from
stream's output history, and ensures that all other output records that were covered by record
are visible. In effect, this draws background ink over the record, and then redraws all the records
that overlap record.

=> output-record-hit-detection-rectangle* record [Generic Function]
This method is used to establish the usual "effective size" of record for hit detection queries.
Four values are returned corresponding to the edges of the bounding rectangle that is the hit
detection rectangle. The default method (on CLIM's standard output record class) is equivalent
to calling calling bounding-rectangle* on record, but this method can be specialized to return
a larger bounding rectangle in order to implement a form of hysteresis.

=> output-record-refined-sensitivity-test record x y [Generic Function]
This is used to definitively answer hit detection queries, that is, determining that the point (x;y)
is contained within the output record record. Once the position (x;y) has been determined to lie
within output-record-hit-detection-rectangle*, output-record-refined-sensitivity-
test is invoked. Output record subclasses can provide a method that provides a more precise
definition of a hit, for example, output records for elliptical rings will implement a method that
detects whether the pointing device is on the elliptical ring.

=> highlight-output-record record stream state [Generic Function]
This method is called in order to draw a highlighting box around the output record record on
the output recording stream stream. state will be either :highlight (meaning to draw the
highlighting) or :unhighlight (meaning to erase the highlighting). The default method (on
CLIM's standard output record class) will simply draw a rectangle that corresponds the the
bounding rectangle of record.