diff --git a/ui/src/keyboardMappings.ts b/ui/src/keyboardMappings.ts
index 79ed11a..92214cf 100644
--- a/ui/src/keyboardMappings.ts
+++ b/ui/src/keyboardMappings.ts
@@ -99,6 +99,7 @@ export const keys = {
   Tab: 0x2b,
 } as Record<string, number>;
 
+// Mapping from characters entered into "Paste text" box to key codes and modifiers
 export const chars = {
   A: { key: "KeyA", shift: true },
   B: { key: "KeyB", shift: true },