What indicates the size of a drawing in a standard title block?

The size of a drawing in a standard title block is typically indicated by the "Sheet Size" or "Drawing Size" notation, which specifies the dimensions of the paper on which the drawing is printed, such as A4, A3, or Arch D. Additionally, the scale of the drawing may be included, providing context on how the drawing's dimensions relate to real-world measurements. These elements help users quickly understand the drawing's physical size and the level of detail represented.