adapting markdown syntax

ICON-NWP/bacy.md

@@ -3,36 +3,24 @@ cycles with ICON. It is modular in structure with each module performing steps
 like computing the dynamical model evolution (more), data assimilation (core),
 surface, snow and sea surface analysis. 
 
-###################################################################################
-                                 BACY_1.0
-###################################################################################
-
+# BACY_1.0
 This document gives you a short introduction into the usage of BACY_1.0.
 A detailed userguide and further documentation is available at
 'git@gitlab.dkrz.de:dace/dace_doc.git' under dace_doc/org/dace_bacy.git
 and is continuously being updated.
 
-
-===================================================================================
-                            How to get BACY_1.0?
-===================================================================================
-
+## How to get BACY_1.0?
 BACY_1.0 is under version control using 'git'. To obtain BACY_1.0 from the
 remote repository 'git@gitlab.dkrz.de:dace/dace_bacy.git' the following steps on
 your local machine are necessary:
-
+~~~
 git clone git@gitlab.dkrz.de:dace/dace_bacy.git <my_bacy_name>
 cd <my_bacy_name>/modules
 ./copy_defaults.sh
+~~~
 
-===================================================================================
-                         How to use BACY_1.0? (Overview)
-===================================================================================
-
------------------------------------------------------------------------------------
-                                 Modules
------------------------------------------------------------------------------------
-
+## How to use BACY_1.0? (Overview)
+### Modules
 BACY_1.0 pursues a MODULAR CONCEPT. Each MODULE is an self-sufficient unit.
 The only contact points to its environment are realized by INTERFACES. 
 These are the directories 'iodir/input' and 'iodir/output' which are
@@ -57,19 +45,17 @@ which rely on NAMING CONVENTIONS, classification of variables, etc., which are
 IMPORTANT to maintain the modular concept.
 
 In summary: to run a module stand-alone, the following steps are necessary.
-
+~~~
 prep_<module> [-h] [-d] arg1 ... argn
 <module>      [-h] [-d] arg1 ... argn
 save_<module> [-h] [-d] arg1 ... argn
+~~~
 
 The option [-h] gives you an explanation of the usage of the script and the
 option [-d] calls the script in a dry-run, meaning that no jobs will be
 submitted.
 
------------------------------------------------------------------------------------
-                                 A cycle
------------------------------------------------------------------------------------
-
+### A cycle
 The module 'cycle' plays a special role and cannot be understood as a module in
 the usual sense (see above). The main difference is the absence of the 'input',
 'output' and 'run' directories. The purpose of 'cycle' is the provision of an