g: A container element for grouping elements.
In mslegrand/svgR: svgR is an R DSL to generate svg markup

A container used to group other elements, which allows for convenient way to apply transforms and assignments to the group as a whole.

Animation Event Attributes: onload
Conditional Processing Attributes: requiredExtensions, requiredFeatures, systemLanguage
Core Attributes: id, xml.base, xml.lang, xml.space
Graphical Event Attributes: onactivate, onclick, onfocusin, onfocusout, onload, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup
Presentation Attributes: clip.path, color.interpolation, color.rendering, cursor, display, enable.background, filter, mask, opacity
Unclassified: class, externalResourcesRequired, style, transform

Animation Elements: animate, animateColor, animateMotion, animateTransform, set
Descriptive Elements: desc, metadata, title
Gradient Elements: linearGradient, radialGradient
Graphics Referencing Elements: image, use
Non-structural Container Elements: a, marker, mask, pattern, switch
Shape Elements: circle, ellipse, line, path, polygon, polyline, rect
Structural Container Elements: defs, g, svg, symbol
Text Content Elements: text
Uncategorized Elements: altGlyphDef, clipPath, color.profile, cursor, filter, font, font.face, foreignObject, script, style, view