Installation-guide.md

@@ -118,6 +118,7 @@ Configuring the tests
 
 The configuration is done through the .yafits.bashrc file.
 
+```
 # contains reference json files against which the tests will be performed
 export YAFITS_REFDIR=/obs/partemix/yafits_tmp/REF
 
@@ -126,9 +127,10 @@ export YAFITS_OBJDIR=/obs/partemix/yafits_tmp/OBJ
 
 # if true, a json data file will be created in YAFITS_OBJDIR for each opened data cube
 export YAFITSV_TESTMODE=true
+```
 
-How it works
-------------
+How does it work
+----------------
 
 All the files existing in YAFITS_REFDIR will be compared to the file with the same name in YAFITS_OBJDIR
 The result of the comparison will be stored in a report file in the home directory of Yafits