A Curious Indentation

I leaned forward against the cool mahogany of the desk. Underneath an open, lined notebook, a slight ridge caught my attention. Pausing, I tilted my head to inspect the paper from a shallow angle. A subtle impression—the ghost of a handwritten numeral '7'—was pressed deep into the fiber, left behind from whatever page was written on before. I raised my magnifying glass, aligning the rim with the faint indentation. The paper grain was slightly crushed, casting a miniature shadow in the morning light. Satisfied with this quiet discovery, I gently rested my magnifying handle against the edge of the notebook.