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diff --git a/Map/Business/WmapParser/TokenType.swift b/Map/Business/WmapParser/TokenType.swift
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+++ b/Map/Business/WmapParser/TokenType.swift
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+// Copyright (C) 2024 Rubén Beltrán del Río
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see https://map.tranquil.systems.
+extension Wmap {
+  enum TokenType: CaseIterable {
+    case vertexLabel
+    case edgeUndirected  // --
+    case edgeDirected  // ->
+    case leftParen, rightParen
+    case leftBracket, rightBracket
+    case comma
+    case plus, minus
+    case realNumber
+    case stageNumber  // i, ii, iii, iv
+    case shapeLabel  // x, square, triangle, circle
+    case noteKeyword  // [Note]
+    case groupKeyword  // [Group]
+    case inertiaKeyword  // [Inertia]
+    case evolutionKeyword  // [Evolution]
+    case text  // free text until newline
+    case newline
+    case eof
+    case error  // invalid token that should cause line to be ignored
+  }
+}