DISCUSSION_PROMPT: 'Discussion Prompt', --->show at toc level
    ADAPTIVE_HOMEWORK: 'Adaptive Homework', --->show at toc level
    SELECTED_READING: 'Selected Reading', --->show at toc level
    LEVELED_READER: 'Leveled Reader', --->show at toc level
    PARTNER_LINK: 'Partner Link', --->show at toc level
    LEARNING_MODEL: 'Learning Model', --->show at toc level
    STUDENT_VOICE: 'Student Voice', --->show at toc level
    INTERACTIVE_MEDIA: 'Interactive Media', --->show at toc level
    LINK: 'Link', --->show at toc level
    TEST: 'Test', --->show at toc level
    AUDIO: 'Audio', --->show at toc level
    VIDEO: 'Video', --->show at toc level
    ETEXT: 'eText', --->show at toc level
    REALIZE_READER_SELECTION: 'Realize Reader Selection', --->show at toc level
    QUESTION_BANK: 'Question Bank', --->show at toc level
    DOCUMENT: 'Document', --->show at toc level
    NOT_AVAILABLE: 'notavailable', --->show at toc level
    ACTIVITY_SUPPORT: 'Activity Support', --->show at toc level
    LESSON: 'Lesson', --do not show at TOC level 
    TIER: 'Tier', --do not show at TOC level
    CENTER: 'Center', --do not show at TOC level
    PROGRAM: 'Program', --do not show at TOC level
    PLAYLIST: 'Playlist', do not show at all 
    REMEDIATION: 'Remediation', show at toc level