[https://en.m.wikipedia.org/wiki/VCard vCard], also known as VCF (Virtual Contact File), is a file format standard for electronic business cards.
Graphviz (Graph Visualization)
DOT is the
text file format of the suite GraphViz. It has a human-readable syntax that describes network data, including subgraphs and elements appearances (i.e. color, width, label). NetworkX, Tulip or ZGRViewer can import DOT files as well.
with the filename extension gv or dot. The extension gv is preferred, to avoid confusion with the extension dot used by versions of Microsoft Word template files before 2007.
Scalable Vector Graphics (SVG) is an Extensible Markup Language (XML)-based vector image format for two-dimensional graphics with support for interactivity and animation.