Formatting

Fonts

Bold, italic, etc.

Outlines

Footnotes

Indexing

Data Types

Text

Math (as basic as ASCII)

Programs

Graphing Calculator

Maple

Mathematica

Markup

MathML

Kai Ping

Tex

Languages

Image

Bitmap

Vector

CAD

Drawing

3D, nD

Messages

Transclusions

Multi-locations

All quotes link to original

Views

Chronological, topical (1D)

Parallel columns with visible links (2D)

Static 3D

Dynamic 3D, nD

Basic Concepts

Learning is active

Collaboration

Asynchronous

Synchronous

Documenting your thought

Adds clarification

Makes them more concrete

Organizes complex ideas

Your mind cannot remember all ideas

Keeps for future

Teaches others

Reminders to yourself

Maintain history

Adding links, tags, ratings

Creating structure

Aids understanding

High-level overview shows linkages between ideas

Adding comments, corrections, revisions, questions, etc.

Organization

Types

Mindmaps (static 2D), tree-like

Network-like, dynamic (Fenfire)

Zigzag (nD intersecting lists)

Combinations

Anyone can create a structure

An existing structure can be the basis for new version of one

Filtering

Document ratings - various criteria

Author ratings - various criteria

Popularity