diff --git a/src/parser/PrctlFileParser.cpp b/src/parser/PrctlFileParser.cpp
index ad72486e9..beabee439 100644
--- a/src/parser/PrctlFileParser.cpp
+++ b/src/parser/PrctlFileParser.cpp
@@ -17,7 +17,7 @@ namespace storm {
 namespace parser {
 
 PrctlFileParser::PrctlFileParser(std::string filename, storm::models::Dtmc<double>& dtmc, enum libraries library) {
-
+	//Here ,the model checker which uses the correct library is created and a reference stored in the pointer modelChecker:
 	storm::modelchecker::SparseDtmcPrctlModelChecker<double>* modelChecker = nullptr;
 	switch(library) {
 	//case EIGEN:
@@ -30,11 +30,14 @@ PrctlFileParser::PrctlFileParser(std::string filename, storm::models::Dtmc<doubl
 		modelChecker = new storm::modelchecker::GmmxxDtmcPrctlModelChecker<double>(dtmc);
 		break;
 	}
+
+	//Now, the check function (which works on abstract model checkers) can parse the formulas and invoke the model checker:
 	check(filename, modelChecker);
 	delete modelChecker;
 }
 
 PrctlFileParser::PrctlFileParser(std::string filename, storm::models::Mdp<double>& mdp, enum libraries library) {
+	//Here ,the model checker which uses the correct library is created and a reference stored in the pointer modelChecker:
 	storm::modelchecker::SparseMdpPrctlModelChecker<double>* modelChecker = nullptr;
 	switch(library) {
 	//case EIGEN:
@@ -46,6 +49,8 @@ PrctlFileParser::PrctlFileParser(std::string filename, storm::models::Mdp<double
 		modelChecker = new storm::modelchecker::GmmxxMdpPrctlModelChecker<double>(mdp);
 		break;
 	}
+
+	//Now, the check function (which works on abstract model checkers) can parse the formulas and invoke the model checker:
 	check(filename, modelChecker);
 	delete modelChecker;
 }
diff --git a/src/parser/PrctlParser.h b/src/parser/PrctlParser.h
index 22e11a274..b549c0d62 100644
--- a/src/parser/PrctlParser.h
+++ b/src/parser/PrctlParser.h
@@ -18,8 +18,7 @@ namespace parser {
  * This class creates a PctlFormula object which can be accessed through the getFormula() method (of base
  * class PrctlParser). However, it will not delete this object.
  */
-class PrctlParser : Parser
-{
+class PrctlParser : Parser {
 	public:
 		/*!
 		 * Reads a PRCTL formula from its string representation and parses it into a formula tree, consisting of
@@ -35,8 +34,7 @@ class PrctlParser : Parser
 		/*!
 		 *	@return a pointer to the parsed formula object
 		 */
-	storm::formula::AbstractFormula<double>* getFormula()
-		{
+		storm::formula::AbstractFormula<double>* getFormula() {
 			return this->formula;
 		}