Linux Mint Debian Edition (LMDE), is based off Debian as opposed to Ubuntu, which is the baseline for the standard editions of Linux Mint. The instructions for Debian in this Wiki are expected to apply to LMDE. One minor exception is the syntax for installing packages. Debian does not install "sudo" by default, but LMDE does.
For example, as of 10/27/2019 the current version of LMDE is based off Debian Stretch, so the instructions for Debian Stretch would apply.