From 8fc2f3d75803be9f301f0c138e15e6c82a9508a8 Mon Sep 17 00:00:00 2001
From: jojohoch <joachim.hoch@iqb.hu-berlin.de>
Date: Mon, 28 Feb 2022 11:51:48 +0100
Subject: [PATCH] [player] Add comments about Unicode values used in the math
 keyboard

---
 .../app/components/math-keyboard/math-keyboard.component.ts    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/projects/player/src/app/components/math-keyboard/math-keyboard.component.ts b/projects/player/src/app/components/math-keyboard/math-keyboard.component.ts
index 3e153288e..b06439af0 100644
--- a/projects/player/src/app/components/math-keyboard/math-keyboard.component.ts
+++ b/projects/player/src/app/components/math-keyboard/math-keyboard.component.ts
@@ -20,10 +20,12 @@ export class MathKeyboardComponent implements OnInit, AfterViewInit {
   operators!: string[][];
   private allowedKeys!: string[];
 
+  // U+2022
   readonly placeValue: string[][] = [
     ['•']
   ];
 
+  // U+2B1C, U+2758, U+2219
   readonly squareDashDot: string[][] = [
     ['⬜', '❘', '∙']
   ];
@@ -39,6 +41,7 @@ export class MathKeyboardComponent implements OnInit, AfterViewInit {
     ['0']
   ];
 
+  // '·' = U+00B7
   readonly basicOperators: string[][] = [
     ['+', '-'],
     ['·', ':']
-- 
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