diff --git a/version0.6/ebnf.cpp b/version0.6/ebnf.cpp
index d3ecb4b..ef9884b 100644
--- a/version0.6/ebnf.cpp
+++ b/version0.6/ebnf.cpp
@@ -45,9 +45,11 @@ data type = <scalar> <identifier> <calculation> <list> <hash> <function>
 		<func> <(> <identifier>|<identifiers> <)> <{> <statement> <}>
 <1><definition> ::=
 		<var> <identifier> <=> <scalar>|<identifier>|<list>|<hash>|<calculation> <;>
+		<var> <identifier> <=> <(> <scalar>|<identifier>|<list>|<hash>|<calculation> <)> <;>
 		<var> <identifier> <=> <function>
 <1><assigntment> ::=
 		<!=var> <identifier> <=> <scalar>|<identifier>|<list>|<hash>|<calculation> <;>
+		<!=var> <identifier> <=> <(> <scalar>|<identifier>|<list>|<hash>|<calculation> <)> <;>
 <statement> ::=
 		<!=<for> <(>> <definition>|<assignment>
 		<return> <scalar>|<identifier>|<list>|<hash>|<calculation> <;>
diff --git a/version0.6/finished.txt b/version0.6/finished.txt
index dde89cd..a70664c 100644
--- a/version0.6/finished.txt
+++ b/version0.6/finished.txt
@@ -19,4 +19,6 @@ if(!e.e)e;
 var e=e.e("str",1).e()*e.e("str",1).e*0.001;
 e.e("str",1).e("str",e-e);
 e.e(e("str",e.e()/2880)~"str");
-var e=func(){e;};
\ No newline at end of file
+var e=func(){e;};
+var e=e+e-e;
+var e=e+e+e+e;
diff --git a/version0.6/main.cpp b/version0.6/main.cpp
index c324686..0c11dee 100644
--- a/version0.6/main.cpp
+++ b/version0.6/main.cpp
@@ -7,8 +7,10 @@ int main()
 	nasal_lexer lex;
 	nasal_parser par;
 	std::string command;
-	std::cout<<">> nasal-- script by ValKmjolnir"<<std::endl;
+	std::cout<<">> nasal script interpreter by ValKmjolnir"<<std::endl;
 	std::cout<<">> input \"help\" to find help."<<std::endl;
+	std::cout<<">> Be careful: this interpreter uses strict methods to check if there's an error."<<std::endl;
+	std::cout<<"   Always add \";\" after each statement (except loop and if-else)."<<std::endl;
 	while(1)
 	{
 		std::cout<<">> ";
diff --git a/version0.6/nasal_parser.h b/version0.6/nasal_parser.h
index 4ed3d59..200e415 100644
--- a/version0.6/nasal_parser.h
+++ b/version0.6/nasal_parser.h
@@ -451,7 +451,7 @@ class nasal_parser
 				temp.pop();
 			}
 			
-			if((tbl[2]!=__scalar) && (tbl[2]!=__identifier) && ((tbl[1]==__sub_operator) || (tbl[1]==__add_operator)) && (tbl[0]==__identifier))
+			if((tbl[2]!=__scalar) && (tbl[2]!=__identifier) && (tbl[2]!=__calculation) && ((tbl[1]==__sub_operator) || (tbl[1]==__add_operator)) && (tbl[0]==__identifier))
 			{
 				parse_unit t;
 				t.type=__identifier;
@@ -759,9 +759,9 @@ class nasal_parser
 		}
 		bool definition_check()
 		{
-			int tbl[5]={0};
+			int tbl[7]={0};
 			std::stack<parse_unit> temp;
-			for(int i=0;i<5;++i)
+			for(int i=0;i<7;++i)
 			{
 				if(parser.empty())
 					break;
@@ -769,7 +769,7 @@ class nasal_parser
 				tbl[i]=temp.top().type;
 				parser.pop();
 			}
-			for(int i=0;i<5;++i)
+			for(int i=0;i<7;++i)
 			{
 				if(temp.empty())
 					break;
@@ -786,6 +786,16 @@ class nasal_parser
 				parser.push(t);
 				return true;
 			}
+			else if((tbl[6]==__var) && (tbl[5]==__identifier) && (tbl[4]==__equal) && (tbl[3]==__left_curve) && ((tbl[2]==__identifier) || (tbl[2]==__scalar) || (tbl[2]==__list) || (tbl[2]==__hash) || (tbl[2]==__calculation)) && (tbl[1]==__right_curve) && (tbl[0]==__semi))
+			{
+				parse_unit t;
+				t.type=__definition;
+				t.line=parser.top().line;
+				for(int i=0;i<7;++i)
+					parser.pop();
+				parser.push(t);
+				return true;
+			}
 			else if((tbl[3]=__var) && (tbl[2]==__identifier) && (tbl[1]==__equal) && (tbl[0]==__function))
 			{
 				parse_unit t;
@@ -800,9 +810,9 @@ class nasal_parser
 		}
 		bool assignment_check()
 		{
-			int tbl[4]={0};
+			int tbl[6]={0};
 			std::stack<parse_unit> temp;
-			for(int i=0;i<4;++i)
+			for(int i=0;i<6;++i)
 			{
 				if(parser.empty())
 					break;
@@ -810,7 +820,7 @@ class nasal_parser
 				tbl[i]=temp.top().type;
 				parser.pop();
 			}
-			for(int i=0;i<4;++i)
+			for(int i=0;i<6;++i)
 			{
 				if(temp.empty())
 					break;
@@ -830,6 +840,18 @@ class nasal_parser
 				parser.push(t);
 				return true;
 			}
+			else if((tbl[5]==__identifier) && ((tbl[4]==__equal) || (tbl[4]==__add_equal) || (tbl[4]==__sub_equal)
+					|| (tbl[4]==__mul_equal) || (tbl[4]==__div_equal) || (tbl[4]==__link_equal))
+					&& (tbl[3]==__left_curve) && ((tbl[2]==__identifier) || (tbl[2]==__scalar) || (tbl[2]==__list) || (tbl[2]==__hash) || (tbl[2]==__calculation)) && (tbl[1]==__right_curve) && (tbl[0]==__semi))
+			{
+				parse_unit t;
+				t.type=__definition;
+				t.line=parser.top().line;
+				for(int i=0;i<6;++i)
+					parser.pop();
+				parser.push(t);
+				return true;
+			}
 			return false;
 		}
 		bool function_def()
diff --git a/version0.6/remainbug.txt b/version0.6/remainbug.txt
index 077bc08..ec747fa 100644
--- a/version0.6/remainbug.txt
+++ b/version0.6/remainbug.txt
@@ -1 +1 @@
-null
+null
\ No newline at end of file