وَمِثَالُ مَا كَانَ عَامِلُهَا مَعْنَى الْفِعْلِ، نَحْوُ: «هَذَا زَيْدٌ قَائِمًا» مَعْنَاهُ أُنَبِّهُ وَأُشِيرُ.
Translation: For ḥāl governed by a verbal meaning, the book gives “This is Zayd, standing”: the underlying sense is calling attention and indicating.
This is a semantic explanation by the author. The verbs “I call attention/I indicate” are not overtly present in the sentence to be parsed.