presence check iteration

local function lookForWord( target )

    levelName = currentLevel..currentLevelName..".txt"
    local path = system.pathForFile(levelName, system.ResourceDirectory)
    for line in io.lines(path) do
        for word in line:gmatch( "[^,]+" ) do
            if word == target then
                return true
            end
            end
    end
    return false
end