document iteration callbacks, alphabetize
document iteration callbacks, alphabetize

wtfbbqhax/libdnet,jncornett/libdnet,wtfbbqhax/libdnet,kbandla/libdnet,kbandla/libdnet,wtfbbqhax/libdnet,jncornett/libdnet,jncornett/libdnet,kbandla/libdnet