Currently, javadoc tags can either be inline (e.g. {@link}) or block tags (e.g. @see) but not both. (Hence the different names for the {@link} and @see tags, which internally are handled by the same code.)

Recent custom tags would benefit from being able to be used inline or as block tags.

For example, the custom tags for @jls and @jvms would benefit from being usable as inline tags. Conversely, the system {@systemProperty} tag would benefit from being usable as a block tag.