diff --git a/multigrid/examples/tsection.json b/multigrid/examples/tsection.json
index e54bf7a..d03d5d1 100644
--- a/multigrid/examples/tsection.json
+++ b/multigrid/examples/tsection.json
@@ -4,45 +4,46 @@
             "operators": {
                 "xi": "upwind9",
                 "eta": "upwind9"
-            }
-        },
-        "grid0": {
-            "x": "linspace:-5:5:101",
-            "y": "linspace:0:5:50",
+            },
             "boundary_conditions": {
-                "south": "multi:grid1(0,61):grid2(0,41)",
+                "south": "vortex",
                 "north": "vortex",
                 "east": "vortex",
                 "west": "vortex"
             }
         },
-        "grid1": {
-            "x": "linspace:-5:1:61",
-            "y": "linspace:-5:0:50",
+        "grid0": {
+            "x": { "linspace": { "start": -5, "end": 5, "steps": 101 } },
+            "y": { "linspace": { "start": 0, "end": 5, "steps": 50 } },
             "boundary_conditions": {
-                "south": "vortex",
-                "north": "multi:grid0(0,61)",
-                "east": "grid2",
-                "west": "vortex"
+                "south": { "multi": [{"neighbour": "grid1", "start": 0, "end": 61}, {"neighbour": "grid2", "start": 0, "end": 41}] }
+            }
+        },
+        "grid1": {
+            "x": { "linspace": { "start": -5, "end": 1, "steps": 61 } },
+            "y": { "linspace": { "start": -5, "end": 0, "steps": 50 } },
+            "boundary_conditions": {
+                "north": { "multi": [{"neighbour": "grid0", "start": 0, "end": 61}] },
+                "east": { "neighbour": "grid2" }
             }
         },
         "grid2": {
-            "x": "linspace:1:5:41",
-            "y": "linspace:-5:0:50",
+            "x": { "linspace": { "start": 1, "end": 5, "steps": 41 } },
+            "y": { "linspace": { "start": -5, "end": 0, "steps": 50 } },
             "boundary_conditions": {
-                "south": "vortex",
-                "north": "multi:grid0(60,101)",
-                "east": "vortex",
-                "west": "grid1"
+                "north": { "multi": [{"neighbour": "grid0", "start": 60, "end": 101}] },
+                "west": { "neighbour": "grid1" }
             }
         }
     },
     "integration_time": 2.0,
     "vortex": {
-        "x0": 0.0,
-        "y0": 0.0,
-        "mach": 0.5,
-        "rstar": 0.5,
-        "eps": 1.0
+        "vortices": [{
+            "x0": 0.0,
+            "y0": 0.0,
+            "rstar": 0.5,
+            "eps": 1.0
+        }],
+        "mach": 0.5
     }
 }
diff --git a/multigrid/src/parsing.rs b/multigrid/src/parsing.rs
index ede3309..d9d9c0d 100644
--- a/multigrid/src/parsing.rs
+++ b/multigrid/src/parsing.rs
@@ -106,6 +106,14 @@ pub struct Interpolate {
     neighbour: String,
 }
 
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct Multi {
+    #[serde(alias = "neighbor")]
+    neighbour: String,
+    start: usize,
+    end: usize,
+}
+
 #[derive(Clone, Debug, Serialize, Deserialize)]
 #[serde(rename_all = "lowercase")]
 pub enum BoundaryType {
@@ -114,6 +122,7 @@ pub enum BoundaryType {
     #[serde(alias = "neighbor")]
     Neighbour(String),
     Vortex,
+    Multi(Vec<Multi>),
 }
 
 pub type BoundaryDescriptors = sbp::utils::Direction<Option<BoundaryType>>;
@@ -269,6 +278,18 @@ impl Configuration {
                                 inp.operator.unwrap().into(),
                             )
                         }
+                        Some(BoundaryType::Multi(multi)) => {
+                            euler::BoundaryCharacteristic::MultiGrid(
+                                multi
+                                    .iter()
+                                    .map(|m| {
+                                        let ineighbour =
+                                            self.grids.get_index_of(&m.neighbour).unwrap();
+                                        (ineighbour, m.start, m.end)
+                                    })
+                                    .collect(),
+                            )
+                        }
                     })
             })
             .collect();
@@ -436,6 +457,35 @@ fn output_configuration() {
             operators: None,
         },
     );
+    grids.insert(
+        "boundary_conditions_multigrid".to_string(),
+        GridConfig {
+            boundary_conditions: Some(BoundaryDescriptors {
+                north: Some(BoundaryType::Multi(vec![Multi {
+                    neighbour: "name_of_grid".to_string(),
+                    start: 4,
+                    end: 7,
+                }])),
+                south: Some(BoundaryType::Multi(vec![
+                    Multi {
+                        neighbour: "name_of_grid".to_string(),
+                        start: 4,
+                        end: 7,
+                    },
+                    Multi {
+                        neighbour: "name_of_grid".to_string(),
+                        start: 41,
+                        end: 912,
+                    },
+                ])),
+                east: None,
+                west: None,
+            }),
+            x: None,
+            y: None,
+            operators: None,
+        },
+    );
     let configuration = Configuration {
         grids,
         integration_time: 2.0,