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+action-info.svg comes from the Material Design icon set. See
+action/svg/production/ic_info_48px.svg in the
+github.com/google/material-design-icons repository at the tag 3.0.2.
+
+action-info.{lo,hi}res.ivg are low- and high-resolution IconVG versions of that
+SVG file. Low resolution means that coordinates are quantized to 1/64th of a
+unit; the graphic's size is 48 by 48 units. High resolution means that
+coordinates are represented by all but the 2 least significant bits of a
+float32. Each low resolution coordinate is encoded in either 1 or 2 bytes. Each
+high resolution coordinate is encoded in either 1, 2 or 4 bytes.
+
+action-info.{lo,hi}res.ivg.disassembly are disassemblies of those IconVG files.
+
+action-info.{lo,hi}res.png are renderings of those IconVG files.
+
+
+
+arcs.ivg is inspired by the two examples at
+https://www.w3.org/TR/SVG/paths.html#PathDataEllipticalArcCommands
+
+arcs.ivg.disassembly is a disassembly of that IconVG file.
+
+arcs.png is a rendering of that IconVG file.
+
+
+
+blank.ivg is a blank, square graphic.
+
+blank.ivg.disassembly is a disassembly of that IconVG file.
+
+blank.png is a rendering of that IconVG file.
+
+
+
+cowbell.svg is an original artwork by nigeltao@golang.org.
+
+cowbell.ivg is an IconVG version of that SVG file.
+
+cowbell.ivg.disassembly is a disassembly of that IconVG file.
+
+cowbell.png is a rendering of that IconVG file.
+
+
+
+elliptical.ivg was created manually.
+
+elliptical.ivg.disassembly is a disassembly of that IconVG file.
+
+elliptical.png is a rendering of that IconVG file.
+
+
+
+favicon.svg is based on doc/gopher/favicon.svg from the Go 1.7 release, after
+using Inkscape to convert strokes and circles to paths, and saving it as an
+"Optimized SVG".
+
+favicon.ivg is an IconVG version of that SVG file.
+
+favicon.ivg.disassembly is a disassembly of that IconVG file.
+
+favicon.png and favicon.pink.png are renderings of that IconVG file.
+
+
+
+gradient.ivg was created manually.
+
+gradient.ivg.disassembly is a disassembly of that IconVG file.
+
+gradient.png is a rendering of that IconVG file.
+
+
+
+lod-polygon.ivg was created manually.
+
+lod-polygon.ivg.disassembly is a disassembly of that IconVG file.
+
+lod-polygon.png and lod-polygon.64.png are renderings of that IconVG file.
+
+
+
+video-005.jpeg comes from an old version of the Go repository. See
+https://codereview.appspot.com/5758047/
+
+video-005.primitive.svg was based on running github.com/fogleman/primitive on a
+256x192 scaled version of video-005.jpeg.
+
+video-005.primitive.ivg is an IconVG version of that SVG file.
+
+video-005.primitive.ivg.disassembly is a disassembly of that IconVG file.
+
+video-005.primitive.png is a rendering of that IconVG file.