diff --git a/wezterm-gui/src/glyphcache.rs b/wezterm-gui/src/glyphcache.rs
index 027aff3e7..5503d4bf5 100644
--- a/wezterm-gui/src/glyphcache.rs
+++ b/wezterm-gui/src/glyphcache.rs
@@ -1171,6 +1171,591 @@ impl BlockKey {
                 intensity: BlockAlpha::Full,
                 style: PolyStyle::Outline,
             }]),
+            // BOX DRAWINGS LEFT HEAVY AND RIGHT DOWN LIGHT
+            0x252d => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS RIGHT HEAVY AND LEFT DOWN LIGHT
+            0x252e => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS DOWN LIGHT AND HORIZONTAL HEAVY
+            0x252f => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+
+            // BOX DRAWINGS DOWN HEAVY AND HORIZONTAL LIGHT
+            0x2530 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+
+            // BOX DRAWINGS RIGHT LIGHT AND LEFT DOWN HEAVY
+            0x2531 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+            // BOX DRAWINGS LEFT LIGHT AND RIGHT DOWN HEAVY
+            0x2532 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+            // BOX DRAWINGS HEAVY DOWN AND HORIZONTAL
+            0x2533 => Self::Poly(&[Poly {
+                path: &[
+                    PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                ],
+                intensity: BlockAlpha::Full,
+                style: PolyStyle::OutlineHeavy,
+            }]),
+            // BOX DRAWINGS LIGHT UP AND HORIZONTAL
+            0x2534 => Self::Poly(&[Poly {
+                path: &[
+                    PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                ],
+                intensity: BlockAlpha::Full,
+                style: PolyStyle::Outline,
+            }]),
+            // BOX DRAWINGS LEFT HEAVY AND RIGHT UP LIGHT
+            0x2535 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS RIGHT HEAVY AND LEFT UP LIGHT
+            0x2536 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS UP LIGHT AND HORIZONTAL HEAVY
+            0x2537 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+
+            // BOX DRAWINGS UP HEAVY AND HORIZONTAL LIGHT
+            0x2538 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+
+            // BOX DRAWINGS RIGHT LIGHT AND LEFT UP HEAVY
+            0x2539 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+            // BOX DRAWINGS LEFT LIGHT AND RIGHT UP HEAVY
+            0x253a => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+            // BOX DRAWINGS HEAVY UP AND HORIZONTAL
+            0x253b => Self::Poly(&[Poly {
+                path: &[
+                    PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                ],
+                intensity: BlockAlpha::Full,
+                style: PolyStyle::OutlineHeavy,
+            }]),
+            // BOX DRAWINGS LIGHT VERTICAL AND HORIZONTAL
+            0x253c => Self::Poly(&[Poly {
+                path: &[
+                    PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                ],
+                intensity: BlockAlpha::Full,
+                style: PolyStyle::Outline,
+            }]),
+            // BOX DRAWINGS LEFT HEAVY AND RIGHT VERTICAL LIGHT
+            0x253d => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS RIGHT HEAVY AND LEFT VERTICAL LIGHT
+            0x253e => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS VERTICAL LIGHT AND HORIZONTAL HEAVY
+            0x253f => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+            // BOX DRAWINGS UP HEAVY AND DOWN HORIZONTAL LIGHT
+            0x2540 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS DOWN HEAVY AND UP HORIZONTAL LIGHT
+            0x2541 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS VERTICAL HEAVY AND HORIZONTAL LIGHT
+            0x2542 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS LEFT UP HEAVY and RIGHT DOWN LIGHT
+            0x2543 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS RIGHT UP HEAVY and LEFT DOWN LIGHT
+            0x2544 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS LEFT DOWN HEAVY and RIGHT UP LIGHT
+            0x2545 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS RIGHT DOWN HEAVY and LEFT UP LIGHT
+            0x2546 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+            ]),
+            // BOX DRAWINGS DOWN LIGHT AND UP HORIZONTAL HEAVY
+            0x2547 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+            // BOX DRAWINGS UP LIGHT AND DOWN HORIZONTAL HEAVY
+            0x2548 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+            // BOX DRAWINGS RIGHT LIGHT AND LEFT VERTICAL HEAVY
+            0x2549 => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+            // BOX DRAWINGS LEFT LIGHT AND RIGHT VERTICAL HEAVY
+            0x254a => Self::Poly(&[
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::Outline,
+                },
+                Poly {
+                    path: &[
+                        PolyCommand::MoveTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Frac(1, 2)),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                        PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                    ],
+                    intensity: BlockAlpha::Full,
+                    style: PolyStyle::OutlineHeavy,
+                },
+            ]),
+            // BOX DRAWINGS HEAVY VERTICAL AND HORIZONTAL
+            0x254b => Self::Poly(&[Poly {
+                path: &[
+                    PolyCommand::MoveTo(BlockCoord::Zero, BlockCoord::Frac(1, 2)),
+                    PolyCommand::LineTo(BlockCoord::One, BlockCoord::Frac(1, 2)),
+                    PolyCommand::MoveTo(BlockCoord::Frac(1, 2), BlockCoord::Zero),
+                    PolyCommand::LineTo(BlockCoord::Frac(1, 2), BlockCoord::One),
+                ],
+                intensity: BlockAlpha::Full,
+                style: PolyStyle::OutlineHeavy,
+            }]),
 
             // Upper half block
             0x2580 => Self::Upper(4),