The <font> SVG element defines a font to be used for text layout.

The fy attribute defines the y-axis coordinate of the focal point for a radial gradient.

The k attribute specifies the amount for decreasing the spacing between the two glyphs in a kerning pair.

The from attribute indicates the initial value of the attribute that will be modified during the animation.

The keyPoints attribute indicates the simple duration of an animation.

The gradientTransform attribute contains the definition of an optional additional transformation from the gradient coordinate system onto the target coordinate system (i.e., userSpaceOnUse or objectBoundingBox). This allows for things such as skewing the gradient. This additional transformation matrix is post-multiplied to (i.e., inserted to the right of) any previously defined transformations, including the implicit transformation necessary to convert from object bounding box units to user space.

The crossorigin attribute, valid on the <image> and <feImage> elements, provides support for configuration of the Cross-Origin Resource Sharing (CORS) requests for the element's fetched data.

The panose-1 attribute indicates the Panose-1 number of a font face.

The slope attribute defines the values for linear filters, such as brightness.

The opacity attribute specifies the transparency of an object or of a group of objects, that is, the degree to which the background behind the element is overlaid.