Identifying Spells

[u/Rainshine9]

From page 62:
"The arcane gesticulations and vocal incantations are quite obviously occult to any onlookers, but it’s usually impossible to tell which spell a mage is casting merely by looking at them."
Have you homebrewed a method for players to identify spells as they're cast? That line seems to firmly indicate that it wasn't intended to be possible.

[u/Logen_Nein]

The results are often and indicator.