One error must be avoided throughout this section: “a demonstrative is definite” is a grammatical classification; “this demonstrative magnifies its referent” is a rhetorical interpretation. The first depends on the form. The second needs context, predicate, attributes, and speaker intention.
Examples:
«هٰذَا صَدِيقِي» — simple identification without a cue for praise or contempt.
«أَهَٰذَا الَّذِي يَذْكُرُ آلِهَتَكُمْ» — contempt in the opponents' speech.
«ذٰلِكَ الْكِتَابُ» — an implication of exalted standing.
The same «هٰذا» can therefore have different effects in different settings. The field of rhetoric relates the choice to what the situation requires (مقتضى الحال).