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C<SL::Clipboard::RequirementSpecItem>. These support classes must

inherit from L<SL::Clipboard::Base> which offers almost a full set of

support functions so that the actual specialized class has to do very

As the clipboard is session-based its contents will be lost when the

session expires (either due to timeouts or to the user logging off).

=item C<copy $object>

Creates a dumped copy of C<$object> and stores that copy in the

made.

Returns the instance of the copied object, a sub-class of

=item C<get_entry [$type]>

Returns the most recently clipped object whose type matches the

most recently copied object is returned.

If no such object exists C<undef> is returned instead.

=item C<to_object>

instance. Several columns of the newly created object are cleared by

C<to_object> itself: the primary key columns (if any) and the columns

C<itime> and C<mtime> (if the object has such columns).

This function should not be overwritten by sub-classes. Instead,

the newly created object before handing it back to the caller.

=item C<type>