original: lanterns may be used for signaling , or as general light sources for camping .
simplifications: lanterns may be used for making signals , or as regular light sources for camping . lanterns may be used for giving signals as in the case of railways , or as general light sources for camping . lamps may be used for signaling , or as general light sources for camping . lanterns can be used signalling as well as general light sources for camping . lanterns may be used for signaling , or as general light sources for camping . lanterns may be used for sending signs , or signals , or as light for camping . lanterns may be used for signaling , or as light for camping . lanterns may be used for signaling , or as general light sources for camping .