The type attribute is a generic attribute and it has different meaning based on the context in which it's used.

• For the <animateTransform> element, it defines the type of transformation, whose values change over time.
• For the <feColorMatrix> element, it indicates the type of matrix operation. The keyword matrix indicates that a full 5x4 matrix of values will be provided. The other keywords represent convenience shortcuts to allow commonly used color operations to be performed without specifying a complete matrix.
• For the <feFuncR>, <feFuncG>, <feFuncB>, and <feFuncA> elements, it Indicates the type of component transfer function.
• For the <feTurbulence> element, it indicates whether the filter primitive should perform a noise or turbulence function.
• For the <style> and <script> elements, it defines the content type of the element.

You can use this attribute with the following SVG elements:

• <animateTransform>
• <feColorMatrix>
• <feFuncA>
• <feFuncB>
• <feFuncG>
• <feFuncR>
• <feTurbulence>
• <script>
• <style>