Why is ,,StringToMessage&lt,, underlined in red?

[user_bf238de613936b6f67ae937b4d1270e206e5ca9fbefae279d10f95 (Ｍr.Mad)]

Hey, Why is ,StringToMessage&lt, in this Verse code underlined in red? Unfortunately, I don’t have any knowledge about verses

[Mineblo]

Replace < with < and > with >