 
 <prompt> Wetin the A for IESNA stand for? Given the previous question, write a context wey contain the answer. E fit be 1 - 20 sentences. Context: <response>: The Illuminating Engineering Society of North America (IESNA), along with organizations like ANSI and ASHRAE, dey publish guidelines, standards, and handbooks wey allow categorization of the illumination needs of different built environments. Manufacturers of lighting equipment dey publish photometric data for their products, wey define the distribution of light wey dey come out from a specific luminaire. Dis data dey usually dey expressed in standardized form wey dey defined by the IESNA. 