Actual vs. potential state of affairs (Greek)

The particle ὅτι may be usefully regarded as operating in a manner parallel to that of ἵνα but giving procedural instructions to a reader or hearer to read the following text as describing an actual state of affairs, rather than the potential one ἵνα introduces. In simple terms, ὅτι introduces a description of a situation, Whereas ἵνα introduces a potential situation: what the speaker or subject wants to see happening or thinks should be happening. Here the mood of the verbs in the corresponding clauses supports this analysis with the indicative indicating ‘fact’ — as presented by the speaker or subject — and the subjunctive indicating potentiality.—Margaret Sim, A Relevant Way to Read, 80 (emphasis original)