BOX [x1], [y1] TO x2, y2[, c ]
   BOX TO x2, y2[, c ]

This instruction draws a rectangle on the screen, starting from the coordinates (x1, y1) to arrive at the coordinates (x2, y2), using the color c. The start or the final coordinates can be omitted: in this case, ugBASIC will draw, respectively, starting from the last drawn position and arriving at the last drawn position. If the color is omitted, the last color selected with the INK or PEN command will be used. Finally, the default line style is full but a 16 bit bitmask can be set with the SET LINE command.

  BOX 10,10 TO 100,100,WHITE
  BOX TO 100,100
  BOX ,10 TO ,100

See also the following example files:

• graphics_lines_02.bas

 Bx

• Atari (400/800)
• Atari XL/XE
• Commodore 128 (MOS 8502)
• Commodore 128 (Zilog Z80)
• Commodore 64
• TRS-80 Color Computer
• TRS-80 Color Computer 3
• ColecoVision
• Amstrad CPC 664
• Dragon 32
• Dragon 64
• Thomson MO5
• Thomson MO5
• Olivetti Prodest PC128
• Commodore PLUS/4
• SEGA SC-3000
• SEGA SG-1000
• VG-5000
• Commodore VIC-20
• ZX Spectrum 48

If you have encountered a problem using this command, if you think there is a bug or the explanation is unclear, please open an issue for this keyword on GitHub. Thank you!