Size used when opening the |terminal| window. Format: {rows}x{columns} or {rows}*{columns}.

• When empty the terminal gets the size from the window.
• When set with a "x" (e.g., "24x80") the terminal size is not adjusted to the window size. If the window is smaller only the top-left part is displayed.
• When set with a "50") the terminal size follows the window size, but will not be smaller than the specified rows and/or columns.
• When rows is zero then use the height of the window.
• When columns is zero then use the width of the window.
• Using "0x0" or "0*0" is the same as empty.
• Can be overruled in the |term_start()| options with "term_rows" and "term_cols".