A calligram is a visual form of writing where the arrangement of letters and words creates a specific shape or image that relates to the content of the text. This artistic technique combines elements of poetry and graphic design, allowing the text to convey meaning not just through words but also through its visual presentation. Calligrams can be found in various forms of art and literature, often used to enhance the reader's experience. Famous examples include the works of Guillaume Apollinaire, who popularized this style in the early 20th century. Calligrams invite readers to engage with the text in a more interactive and imaginative way.