cleaning stuff up

src/main/kotlin/be/nielandt/CrossSolver.kt

@@ -10,6 +10,9 @@ import java.util.*
 enum class Move {
     F, F_, F2, B, B_, B2, L, L_, L2, R, R_, R2, U, U_, U2, D, D_, D2;
 
+    /**
+     * Static methods for the Move object.
+     */
     companion object {
         /**
          * Make a random set of moves that makes sense.
@@ -28,6 +31,9 @@ enum class Move {
             return result
         }
 
+        /**
+         * Use the given counter, which contains digits that correspond with the amount of Moves, to generate a list of Moves.
+         */
         fun combo(counter: Counter): List<Move> {
             val res = mutableListOf<Move>()
             for (i in 0 until counter.size()) {
@@ -37,6 +43,10 @@ enum class Move {
         }
     }
 
+    /**
+     * Use this as `Move otherFace Move`, a quick way to check if the moves manipulate the same face or not.
+     * Example: `Move.F otherFace Move.U_ == false`
+     */
     infix fun otherFace(otherMove: Move): Boolean {
         return this.toString().substring(0, 1) != otherMove.toString().substring(0, 1)
     }
@@ -44,10 +54,8 @@ enum class Move {
 }
 
 /**
- * Convert a color into a letter.
+ * Convert the color into a single digit for print purposes.
  */
-val COLOR_LETTER = arrayOf("W", "Y", "O", "R", "G", "B")
-
 fun l(c: Color): String {
     return c.name.first().toString()
 }