"It's not so much that uttering one noun would do stuff, but that it'd hang around the next time you started a spell, or maybe said a verb."

Haroun composes his thoughts.  This is, in a sense, a spell designed to go wrong, since 『Bella』 isn't supposed to be a valid expression.  If he was the sort who just memorized incantations, he'd be out of luck right now; but he goes to a proper magic academy where they teach you to know things, not just do them.  More importantly, Professor Nightstar has taught him how to test things.

There's a 『Light』 spell for shining harmless light on a target, to make sure a targeting expression evaluates to what you had in mind.  There's a clause of 『Language』 that's supposed to fail safely if its major subclause is a syntax error.  He has both of those memorized and they fall within the purview of his recitation Skills, as does the act of combining their syntax; the spell isn't going to use much energy at all; this should be safe to do on-the-fly, right?  The alternative is for him to stop the carriage and work things out, which would look less impressive in front of the Summoned Hero.  This should be safe to do on the fly.  Yes.  Definitely.  It's a very straightforward combination.

Haroun carefully pronounces, "manca (1 / 100 :: lutta) >> súlë cálë (1 / 1000 :: lutta) <$> ``Bella`` ?: róma".

Bella hears:  "I offer a hundredth of an offering of mana to the spirits of light, that they may send radiance of the thousandth part of power toward Bella if-that's-a-thing and otherwise upward."

This language is a terse one; the spell is much shorter than its English translation.  Bella could probably repeat the sounds back exactly, if she felt like doing that using her mysterious language power, while the words are fresh in her mind.  Bella doesn't know how to meaningfully rearrange the words.  If she focuses on terms like 『>>』 she'll find that all her previous programming experience has given her no referent for what this means - it's just not in her current conceptual library.  But she could repeat back the whole sentence, and she understands what the sentence means as a whole.

Also a spark of radiance forms, around the brightness of a 60-watt bulb.  It doesn't look like much in the daylight, but it's clearly visible.  It begins to drift up towards the sky, and lasts maybe five seconds before winking out.

"Your name is meaningless!" Haroun says reassuringly.

"It's not so much that uttering one noun would do stuff, but that it'd hang around the next time you started a spell, or maybe said a verb."

Haroun composes his thoughts.  This is, in a sense, a spell designed to go wrong, since 『Bella』 isn't supposed to be a valid expression.  If he was the sort who just memorized incantations, he'd be out of luck right now; but he goes to a proper magic academy where they teach you to know things, not just do them.  More importantly, Professor Nightstar has taught him how to test things.

There's a 『Light』 spell for shining harmless light on a target, to make sure a targeting expression evaluates to what you had in mind.  There's a clause of 『Language』 that's supposed to fail safely if its major subclause is a syntax error.  He has both of those memorized and they fall within the purview of his recitation Skills, as does the act of combining their syntax; the spell isn't going to use much energy at all; this should be safe to do on-the-fly, right?  The alternative is for him to stop the carriage and work things out, which would look less impressive in front of the Summoned Hero.  This should be safe to do on the fly.  Yes.  Definitely.  It's a very straightforward combination.

Haroun carefully pronounces, "manca (1 / 10 :: lutta) >> súlë cálë (1 / 100 :: lutta) <$> ``Bella`` ?: róma".

Bella hears:  "I offer a tenth of an offering of mana to the spirits of light, that they may send radiance of the hundredth part of power toward Bella if-that's-a-thing and otherwise upward."

This language is a terse one; the spell is much shorter than its English translation.  Bella could probably repeat the sounds back exactly, if she felt like doing that using her mysterious language power, while the words are fresh in her mind.  Bella doesn't know how to meaningfully rearrange the words.  If she focuses on terms like 『>>』 she'll find that all her previous programming experience has given her no referent for what this means - it's just not in her current conceptual library.  But she could repeat back the whole sentence, and she understands what the sentence means as a whole.

Also a spark of radiance forms, around the brightness of a 6-watt bulb.  It doesn't look like much in the daylight, but it's clearly visible.  It begins to drift up towards the sky, and lasts maybe five seconds before winking out.

"Your name is meaningless!" Haroun says reassuringly.