fillRectangle
Fills a VT420 rectangular area (DECFRA) with a one-cell DEC character.
Coordinates use DEC's one-based inclusive form. Zero values denote omitted parameters and resolve to the corresponding active-viewport edge. When origin mode is enabled, coordinates are relative to the active scrolling margins.
Parameters
codepoint
Decimal fill character. Invalid scalar values are ignored.
top
One-based top row, or 0 when omitted.
left
One-based left column, or 0 when omitted.
bottom
One-based bottom row, or 0 when omitted.
right
One-based right column, or 0 when omitted.