An option to fix the size of the GraphicsObject in HTML em units (1em = font size = width of one line of text). Only has an effect if in the outermost GraphicsObject. Can be either a vector { width, height } or a number (diagonal).
The object Size is a symbol.
The source of this document is in /build/reproducible-path/macaulay2-1.25.05+ds/M2/Macaulay2/packages/VectorGraphics.m2:1875:0.