deletions | additions       diff --git a/Enhanced Figures.md b/Enhanced Figures.md  index 7d6bdf7..281e473 100644  --- a/Enhanced Figures.md  +++ b/Enhanced Figures.md 
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Historically, a figure in a paper is a static, in that it offers one unchanging view of the data offers wish to present. Often, though, adding the opporutnity to either manipulate a figure, or see it in context, lets a reader learn more. By using visualization software capable of outputing to formats that allow for interactivity, authors are not limited to a single view of a figure, and readers can explore beyond what an author-provided default view provides.  ## 3D figures  3D PDF is a standard fully supported by Adobe within PDF itself. It allows for a selectable sequence of views of embedded 3D objects, in which each view can have a subset of objects visible from a given vantage point. As the tools for creating 3D PDFs were spun off from Adobe itself a few years ago, it had become somewhat cumbersome to generate such figures. A [tutorial](http://www.astrobetter.com/tutorial-for-embedding-3d-interactive-graphics-into-pdf/) now exists that allows a user to generate a PDF with a 3D figure using LaTeX tools. 
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Figures are more useful when they can interacted with an explored. One can think of an interactive chart as giving the user the experience of playing with data, but in a very limited sandbox. Many top-tier news agencies (e. g. *The New York Times*) have done a lot of this work, and the technology is now getting easier to use without dedicated developers.   ### Brushing  Brushing is the idea of being able to select, with a box or lasso like tool, a subset of the points in a one- or two- dimensional space.  ### Linking  Linking is when data points are connected. In the context of brushing, this allows a user to explore high dimensional spaces by selecting collections of points in one dimension and determining where they lie in another dimension.   ### Staging  Staging is a storytelling tool, allowing the author to reveal or highlight parts of a figure in sequence. The highlighting can take the form of Brushing and Linking as above.  ## Images in Context  The AstroExplorer tool (cite) and the [ADS All Sky Survey](http://adsass.org) can allow images to be treated as data, in the sense that they can be "put back" on the Sky in context. Here's a sample, using an image from Barnard that is 100 years old (update). Click the caption's link to see it on the Sky in WorldWide Telescope.