Cardinal Characteristics Viewer (CCViewer)
==========================================
Version 44


WHAT THIS IS
------------
CCViewer is a single-file, browser-based interactive viewer for 
diagrams of cardinal characteristics of the continuum. It was built to
accompany the book

    CCC Forcing Constructions for the Real Line
    by Diego A. Mejía, Martin Goldstern, Jakob Kellner, and Saharon Shelah

and displays the various constellations of cardinal characteristics
discussed there, in particular the Cichon's Maximum models.
It is a reasonable flexible tool, though; all kind of partial orders
can be enterd and dsiplayed by editing the input data.


FILES IN THIS RELEASE
----------------------
  CCViewer_v44.html        Loads the KaTeX and Cytoscape.js libraries
                            from the cdnjs CDN at runtime. Smaller file,
                            but needs an internet connection to load
                            correctly.

  CCViewer_v44_full.html   The same program (identical functionality)
                            but with KaTeX 0.16.9 and Cytoscape.js 3.28.1
                            embedded directly in the file. Larger, but
                            fully self-contained and works completely
                            offline.

  LICENSE.txt              MIT license for this program, plus the
                            third-party license notices for the embedded/
                            loaded libraries (Cytoscape.js, KaTeX, and the
                            KaTeX web fonts).

  README.txt               This file.


BASIC USE
---------
- The "Data" panel on the left contains the diagram's source: node
  definitions, relations, and named "Models (or Assumptions)" that add
  extra relations on top of the base diagram. Click "Apply" after editing
  it to redraw the diagram.
- Click the "?" button next to "Data" for the full data-syntax reference
  (node/relation syntax, @set/@setvar blocks, descriptions, comments,
  etc).
- "Models (or Assumptions)" lets you pick named relation sets (and
  nested variants of them) to layer onto the base diagram; the
  description text for the current selection is shown below.
- "View" controls let you fit the diagram to the canvas, merge
  equal nodes ubto a single node, or draw background blobs around equal 
  nodes, and adjust the relative size of nodes vs. arrows.
- "Show/Hide Characteristics" lets you hide individual nodes, or use one
  of the presets (e.g. the Cichon's-diagram-only preset).
- Drag any node to reposition it by hand.
- The "Share" button next to "Apply" produces either a shareable link
  that reopens the program with your current data pre-loaded, or 
  escaped text you can paste in as the DEFAULT_DATA constant directly
  in the HTML file's source.


CREDITS AND LICENSE
--------------------
Copyright (c) 2026 Jakob Kellner. Released under the MIT License.
See LICENSE.txt for the full license text and for the third-party
notices covering Cytoscape.js and KaTeX (including the KaTeX fonts),
which this program uses for graph rendering and math typesetting,
respectively.