Actually, the existence of the person is inferred only by the presence of the text.

As an aside, if this were a dream the inference would still work, but the conclusion would be false (as the poster obviously has no existence independent of the dreamer). But, unfortunately, you will be able to provide no conclusive evidences that this world is not as illusory as the dream world is, as your only sources of evidence are your senses, which are also apparently available to you in the dream state (which you are not able to perceive as illusory whilst dreaming).

Reality? lol.

Not all senses are available in dream state, however.

Really? I've not found that to be true. What sense are unavailable?