Reference: How Do I Set the Tree Control to Display the Expand Button Only in Nodes with Child Nodes? (Magic xpa 4.x)
Set Of 20 Icons Such As Right Arrow, Back, Down Drag, Expand, Play Button, Circuit, Curved Multiply, Web Ui Editable Icon Pack, Pixel Perfect Royalty Free SVG, Cliparts, Vectors, And Stock Illustration.
Expand button black square interface symbol - Free arrows icons
Feature Focus: Easily Expand/Collapse All Bundledocs Sections — Bundledocs
Expand and Collapse buttons in Excel Pivot Tables | MyExcelOnline