alright so i figured out why i just have the ,
now that's have spent a bit of time understanding how it works it makes more sence.
as you pointed out the "romnl01" and "spec1_t_romnl" are textures names and the " , " simply serve as a seperator, for some reason i thought it was a error or something.
So turn out that in the shader editor if you were to export a model from the XXL EDITOR, it has two material ( sometimes 1, depending what has been exported ) , each material has in the shader editor a " image texture " with the name of the texture.
Whatever is written in the "image texture " node, seems to be the text that the " clones " window in the XXL editor will show.
thanks for you answer :))