Merge branch 'gupa977e--tu-dresden.de-preview-patch-16663' into 'preview'

Update fem_software.md

See merge request !734

doc.zih.tu-dresden.de/docs/software/fem_software.md

@@ -188,6 +188,15 @@ that you can simply change to something like 16 or 24. For now, you should stay
 boundaries, because multi-node calculations require additional parameters. The number you choose
 should match your used `--cpus-per-task` parameter in your job file.
 
+### Running MAPDL in Interactive Mode
+
+ANSYS Mechanical APDL (sometimes called ANSYS Classic, the older MAPDL scripted environment).
+
+```console
+marie@login$ srun --partition=haswell --ntasks=1 --cpus-per-task=4 --time=1:00:00 --mem-per-cpu=1700 --pty bash
+marie@node$ mapdl -smp
+```
+
 ## COMSOL Multiphysics
 
 [COMSOL Multiphysics](http://www.comsol.com) (formerly FEMLAB) is a finite element analysis, solver