This is the Przedmiot fakultatywny icon for Windows 10. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.
Two identical, vertically oriented rectangles are placed side by side. In each rectangle, there is a single horizontal line at the top. Beneath that, there is a star. Finally, at the bottom, two identical horizontal lines are aligned parallel to one another. The inside of each rectangle is the same.