Can now do UI rendering based on the name and also have gaps in the grid reliably.

lel.cpp

@@ -17,12 +17,13 @@ namespace lel {
   }
 
   void Parser::id(std::string name) {
-    dbc::check(!cells.contains(name),
-        fmt::format("duplicate cell name {}", name));
-    cells.insert_or_assign(name, cur);
+    if(name != "_") {
+      dbc::check(!cells.contains(name),
+          fmt::format("duplicate cell name {}", name));
+      cells.insert_or_assign(name, cur);
+    }
 
     cur = {cur.col + 1, cur.row};
-
     auto& row = grid.back();
     row.push_back(name);
   }
@@ -32,8 +33,10 @@ namespace lel {
     int cell_height = grid_h / rows;
 
     for(auto& row : grid) {
+      size_t columns = row.size();
+
       for(auto& name : row) {
-        size_t columns = row.size();
+        if(name == "_") continue;
         auto& cell = cells.at(name);
 
         int cell_width = grid_w / columns;