1.  DISCUSSION_PROMPT: 'Discussion Prompt', --->show at toc level
2.     ADAPTIVE_HOMEWORK: 'Adaptive Homework', --->show at toc level
3.     SELECTED_READING: 'Selected Reading', --->show at toc level
4.     LEVELED_READER: 'Leveled Reader', --->show at toc level
5.     PARTNER_LINK: 'Partner Link', --->show at toc level
6.     LEARNING_MODEL: 'Learning Model', --->show at toc level
7.     STUDENT_VOICE: 'Student Voice', --->show at toc level
8.     INTERACTIVE_MEDIA: 'Interactive Media', --->show at toc level
9.     LINK: 'Link', --->show at toc level
10.     TEST: 'Test', --->show at toc level
11.     AUDIO: 'Audio', --->show at toc level
12.     VIDEO: 'Video', --->show at toc level
13.     ETEXT: 'eText', --->show at toc level
14.     REALIZE_READER_SELECTION: 'Realize Reader Selection', --->show at toc level
15.     QUESTION_BANK: 'Question Bank', --->show at toc level
16.     DOCUMENT: 'Document', --->show at toc level
17.     NOT_AVAILABLE: 'notavailable', --->show at toc level
18.     ACTIVITY_SUPPORT: 'Activity Support', --->show at toc level
19.     LESSON: 'Lesson', --do not show at TOC level
20.     TIER: 'Tier', --do not show at TOC level
21.     CENTER: 'Center', --do not show at TOC level
22.     PROGRAM: 'Program', --do not show at TOC level
23.     PLAYLIST: 'Playlist', do not show at all
24.     REMEDIATION: 'Remediation', show at toc level