Answer: THEME

AnswerCrossword Clue
THEMEEnglish assignment
THEMEPuzzle unifier
THEMESelf-descriptive word hidden in the longest Across entries
THEMEUnderlying idea
THEMEA park may have one
THEMEMany crosswords have one
THEMEFeature of some parks
THEMECrossword puzzle feature, often
THEMEUnifying concept
THEMEMelodic motif
THEMEWord before park or song
THEMEAmusement park focus
THEMECrossword puzzle feature
THEME"I'll Be There For You," e.g.
THEMEIdentifying song
THEMEPlot's point
THEMEThe main idea
THEMESchool work
THEMEMelodic subject
THEMEMeeting focus
themethe central subject of a work of art
THEMECentral idea
THEMEKind of park or song
THEMESubject
THEMEKind of song or park
THEMETopic
THEMEAdding certain letters to phrases to mark the 30th anniversary of the seminal "Elk Cloner" computer virus, e.g.
THEMEMelodic fragment
THEMEWriting assignment
THEMEComposition uniter
THEMEEssay
THEMEMotif
THEMEMain subject
THEMEMain idea
THEMEUnifying idea
THEMEThat's the point
THEMEWhat it's all about
THEMEEssay's focus
THEMEWhat's the point
THEMEMost crosswords have one