use: md.exe <Argument> <Parameter>
-ws <IM> <-r> | Drain WorkingSet
-sws | Drain SystemWorkingSet
-mpl | Drain ModifiedPageList
-mcl | Drain CombineMemoryList
-sl <0> | Drain StanbyList (and low priority)
-rh | Drain Registry Hives
-all | Drain All
small CLI to drain memory from different lists and sets
Caution
I am neither for nor against "memory optimizers", this was only made for learning purposes so use it and enjoy it
If you want to really see what it does without any knowledge, you can read this article