> Make has a bunch of cryptic magic variables that refer to things like the targets and prerequisites of rules. I mostly think these should be avoided, because

> Make has a bunch of cryptic magic variables that refer to things like the targets and prerequisites of rules. I mostly think these should be avoided, because they are hard to read. > However, for the sentinel file pattern, the magic variable $(@D), which refers to the directory the target should go in, and $@, which refers to the target, are common enough that you quickly learn to recognize what they mean: So, avoid using the magic variables, but actually you should use them because they're useful and common. Got it.