काशिका वृत्ति (आचार्य वामन एवं जयादित्य - अष्टाध्यायी सूत्र-वृत्ति सम्पूर्ण सान्वय सटीक)

?
Wait, it's a flower or star symbol: "॥ ऽ ॥" or "॥ * ॥"?
Wait! It's a cross/star like a divider between vārttikas!
In Kāśikā editions, Vārttikas are often enclosed between "॥ * ॥" or "॥" and "॥"!
Wait, look at line 29:
"शास इत्वं भवतीति वक्तव्यम् ॥ * ॥ आर्यान् शास्तीति..."
Wait, is line 29 part of the Vārttika?
"क्वौ च शास इत्वं भवतीति वक्तव्यम् ॥" is the Vārttika!
Then "॥ * ॥" separates the Vārttika from the vṛtti/udāharaṇa: "आर्य्यान् शास्तीति, आर्य्यशीः । मित्रशीः ॥"
Yes! That's a traditional separator symbol (like a cross or rosette).

Let's check line 13:
"क्ति स्कन्दिष्यन्दोः ॥ ३१ ॥"
Wait, let's look closely at "क्ति":
Could it be "क्तौ"?
Look at the right side of the letter: there is no vertical bar for au.
Wait, is it "क्त्वा"?
Wait, look at "क्त्वा" in line 14:
"क्त्वाप्रत्यये" - the 'क्त्वा' has क, ्, त, ्, व, ा.
In line 13: