This is Ideographs which are used to tell an idea faster without any words. To show/express ideographs you can use (<>). These angled brackets are also used by rhetorical critics. In short words ideographs are symbols to tell an idea without words. For example we know that a green sign with a arrow is telling us where is the exit. So is the hear.
customers could buy an anti-rheumatic ring from FW Kimball (of 84 Oxford Street, London) by mail order. It has nine circular holes in it that relate the cross-sectional size of fingers to numbered ring sizes. To order a ring you simply sent off your money and Kimball's would send you one by return of post. It is printed in black on white card featuring the trademark symbol of a hand wearing a ring on the little finger.
Frida Kahlo in NY. Frida didn't choose just any dress as her trademark, she chose the traditional dress of the Tehuantepec Isthmus, a matriarchal society, uncommon in Mexican culture. She chose a fashion symbol of powerful Mexican women, and emulated this strength in her art and her life.