Shaolin Xiao Pao Quan/Chui Yi Lu(Small Cannon Fist First road)

There is a confusing issue regarding the Xiao/Da classifcation of Shaolin sets. Like Xiao Hong Quan and Da Hong Quan, Da Tong Bi Quan/Xiao Tong Bi Quan or like in this case Xiao Pao Quan, Da Pao Quan or even sometimes just Pao Quan. As I understand it it is an relatively modern classifaction in case of Shaolin sets. Sometimes it refers to the length of the form. Like a short Da Tong Bi set and three longer Xiao Tong Bi set or/and it can refer to the frame of movements. What is co