Remarks on my Schengen visa

I've my Schengen visa issued from Spanish embassy, there are remarks which I don't seem to understand.

Remarks are:

ESTANCIA
RP
PAKAEERESM

Can somebody tell me what do they mean?

RP means probably that your visa has been issued by the Spanish consulate in representation of an other Schengen country, but I am not sure of that.

PAKAEERESM is a group of letters showing the nationality of the applicant, the Spanish consulate dealing with the application, the type of visa and the reason for the visa application.

So I would guess you are a Pakistanese national, which may account for PAK. But I do not know how to read the rest of the characters.