if debug::step_by_step then//och, the nicest way
track the mainly operations to get the understanding
elseif judge the function at the filename then//in this way, codes may in well arrangement
read the codes per file-group plaguy
elseif main function codes is apparent then//so, i should take the ready-made codes
take the codes of apparent module
else//after all, i will go any my way
Response.redirct "linux's HOWTO"
end if