Explaining the folder structure of a SeedDMS installation

SeedDMS uses a simple folder structure on disc which eases updates and even allows to switch between different versions as long as you stay in the 5.1.x or 6.0.x branch. It makes use of soft links which makes it somewhat harder to install it on systems which do not support them. After unpacking the quickstart archive of SeedDMS 6.0.19, you will see a folder hierarchy like the following (it shows only those directories which are relevant to understand the concept).