diff --git a/gulpfile.js b/gulpfile.js
index e595c11db..b22bcf33d 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -12,12 +12,14 @@ gulp.task('jison2', function() {
 });
 
 gulp.task('jison', shell.task([
-  'jison src/parser/flow.jison -o src/parser/flow.js',
-  'source scripts/compileJison.sh'
+  'jison src/parser/flow.jison -o src/parser/flow.js'
+  //'source scripts/compileJison.sh'
+  //  'jison src/parser/flow.jison -o src/parser/flow.js',
 ]))
 
 gulp.task('jison2', shell.task([
     'jison src/parser/flow.jison -o src/parser/flow.js',
+    'jison src/parser/sequence.jison -o src/parser/sequence.js',
     'source scripts/compileFlow.sh'
 ]))
 
diff --git a/src/parser/flow.js b/src/parser/flow.js
index 4c9f31651..a7de70a15 100644
--- a/src/parser/flow.js
+++ b/src/parser/flow.js
@@ -87,13 +87,13 @@ case 2:
 this.$=$$[$0-3];
 break;
 case 3:
- console.log('In graph config');yy.setDirection($$[$0-1]);this.$ = $$[$0-1];
+ yy.setDirection($$[$0-1]);this.$ = $$[$0-1];
 break;
 case 11:
- console.log('In vertexStatement');yy.addLink($$[$0-2],$$[$0],$$[$0-1]);this.$ = 'oy'
+ yy.addLink($$[$0-2],$$[$0],$$[$0-1]);this.$ = 'oy'
 break;
 case 12:
-console.log('In vertexStatement ... ');this.$ = 'yo';
+this.$ = 'yo';
 break;
 case 13:
 this.$ = $$[$0-3];yy.addVertex($$[$0-3],$$[$0-1],'square');
@@ -105,17 +105,14 @@ case 15:
 this.$ = $$[$0-3];yy.addVertex($$[$0-3],$$[$0-1],'diamond');
 break;
 case 16:
-console.log('In vertex:'+$$[$0]); this.$ = $$[$0];yy.addVertex($$[$0]);
+this.$ = $$[$0];yy.addVertex($$[$0]);
 break;
-case 17: case 21: case 22: case 37:
+case 17: case 19: case 21: case 22: case 37:
 this.$=$$[$0];
 break;
 case 18:
 this.$=$$[$0-1]+''+$$[$0];
 break;
-case 19:
-console.log('Found token (statement): '+$$[$0]);this.$=$$[$0];
-break;
 case 20:
 this.$=$$[$0-2]+'-'+$$[$0];
 break;
@@ -138,7 +135,7 @@ case 28:
 this.$ = {"type":"arrow_open"};
 break;
 case 29:
-console.log('Nice link text here: '+$$[$0-1]);this.$ = $$[$0-1];
+this.$ = $$[$0-1];
 break;
 case 30:
 this.$ = $$[$0-2] + ' ' +$$[$0];
@@ -150,7 +147,7 @@ case 33:
 this.$ = $$[$0-4];yy.addVertex($$[$0-2],undefined,undefined,$$[$0]);
 break;
 case 34:
-console.log('In parser - style: '+$$[$0]);this.$ = $$[$0-4];yy.updateLink($$[$0-2],$$[$0]);
+this.$ = $$[$0-4];yy.updateLink($$[$0-2],$$[$0]);
 break;
 case 35:
 this.$ = [$$[$0]]
@@ -312,10 +309,7 @@ parse: function parse(input) {
     }
     return true;
 }};
-
-/*define('parser/mermaid',function(){
-    return parser;
-});*//* generated by jison-lex 0.3.4 */
+/* generated by jison-lex 0.3.4 */
 var lexer = (function(){
 var lexer = ({
 
diff --git a/src/parser/sequence.jison b/src/parser/sequence.jison
new file mode 100644
index 000000000..5039f41f0
--- /dev/null
+++ b/src/parser/sequence.jison
@@ -0,0 +1,123 @@
+/* description: Parses end executes mathematical expressions. */
+
+/* lexical grammar */
+%lex
+
+%%
+\n                    return 'NEWLINE';
+[0-9]+                return 'NUM';
+":"                   return 'COLON';
+\-                    return 'MINUS';
+\+                    return 'PLUS';
+\=                    return 'EQUALS';
+[a-zåäöæøA-ZÅÄÖÆØ]+   return 'ALPHA';
+"/"                   return 'SLASH';
+"("                   return 'PS';
+")"                   return 'PE';
+"["                   return 'SQS';
+"]"                   return 'SQE';
+\.                    return 'DOT';
+\s                    return 'SPACE';
+<<EOF>>               return 'EOF';
+
+/lex
+
+/* operator associations and precedence */
+
+%right '^'
+
+%start expressions
+
+%% /* language grammar */
+
+expressions
+    : statements
+    {$$=$1;}
+    | EOF
+    ;
+
+statements
+    : statement newlines statements
+        {$$=$1;}
+    | statement EOF
+        {$$=$1;}
+    ;
+
+preStatement
+    : alphaNum COLON alphaNum
+              {console.log('Got new actor id='+$1+' descr='+$3);$$={a:$1,b:$3}}
+              ;
+
+statement
+    : preStatement
+              {console.log('Got new actor id='+$1.a+' descr='+$1.b);$$='actor';}
+    |     preStatement EQUALS callee DOT message
+              {console.log('Got new message from='+$1.a+' to='+$3+' message='+$5+' answer='+$1.b);$$='actor';}
+    ;
+
+action:
+    SQS SQE
+        {console.log('#a');$$='action';}
+    ;
+
+actorDefinition:
+    alphaNum COLON alphaNum
+        {console.log('Got new actor id='+$1+' descr='+$3);$$='actor';}
+    ;
+messageDefinition:
+    caller COLON answer EQUALS callee DOT message
+        {console.log('Got new message from='+$1+' to='+$5+' message='+$7+' answer='+$3);$$='actor';}
+    ;
+
+caller:
+    alphaNum
+    ;
+
+answer:
+    alphaNum
+    ;
+
+callee:
+    alphaNum
+    ;
+
+message:
+    alphaNum
+    ;
+
+spaceList
+    : SPACE spaceList
+    | SPACE
+    ;
+newlines
+    : NEWLINE newlines
+    | NEWLINE
+    ;
+alphaNum
+    :alphaNumStatement
+        {$$=$1;}
+    ;
+
+alphaNumStatement
+    : alphaNum alphaNumToken
+        {$$=$1+''+$2;}
+    | alphaNumToken
+    ;
+
+alphaNumToken
+    : ALPHA
+    {$$=$1;}
+    | NUM
+    {$$=$1;}
+    ;
+
+// Characters and spaces
+text: alphaNum SPACE text
+        {$$ = $1 + ' ' +$3;}
+    | alphaNum spaceList MINUS spaceList text
+         {$$ = $1 + ' - ' +$5;}
+    | alphaNum
+        {$$ = $1;}
+    ;
+
+%%
\ No newline at end of file
diff --git a/src/parser/sequence.js b/src/parser/sequence.js
new file mode 100644
index 000000000..f700609f6
--- /dev/null
+++ b/src/parser/sequence.js
@@ -0,0 +1,662 @@
+/* parser generated by jison 0.4.15 */
+/*
+  Returns a Parser object of the following structure:
+
+  Parser: {
+    yy: {}
+  }
+
+  Parser.prototype: {
+    yy: {},
+    trace: function(),
+    symbols_: {associative list: name ==> number},
+    terminals_: {associative list: number ==> name},
+    productions_: [...],
+    performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate, $$, _$),
+    table: [...],
+    defaultActions: {...},
+    parseError: function(str, hash),
+    parse: function(input),
+
+    lexer: {
+        EOF: 1,
+        parseError: function(str, hash),
+        setInput: function(input),
+        input: function(),
+        unput: function(str),
+        more: function(),
+        less: function(n),
+        pastInput: function(),
+        upcomingInput: function(),
+        showPosition: function(),
+        test_match: function(regex_match_array, rule_index),
+        next: function(),
+        lex: function(),
+        begin: function(condition),
+        popState: function(),
+        _currentRules: function(),
+        topState: function(),
+        pushState: function(condition),
+
+        options: {
+            ranges: boolean           (optional: true ==> token location info will include a .range[] member)
+            flex: boolean             (optional: true ==> flex-like lexing behaviour where the rules are tested exhaustively to find the longest match)
+            backtrack_lexer: boolean  (optional: true ==> lexer regexes are tested in order and for each matching regex the action code is invoked; the lexer terminates the scan when a token is returned by the action code)
+        },
+
+        performAction: function(yy, yy_, $avoiding_name_collisions, YY_START),
+        rules: [...],
+        conditions: {associative list: name ==> set},
+    }
+  }
+
+
+  token location info (@$, _$, etc.): {
+    first_line: n,
+    last_line: n,
+    first_column: n,
+    last_column: n,
+    range: [start_number, end_number]       (where the numbers are indexes into the input string, regular zero-based)
+  }
+
+
+  the parseError function receives a 'hash' object with these members for lexer and parser errors: {
+    text:        (matched text)
+    token:       (the produced terminal token, if any)
+    line:        (yylineno)
+  }
+  while parser (grammar) errors will also provide these members, i.e. parser errors deliver a superset of attributes: {
+    loc:         (yylloc)
+    expected:    (string describing the set of expected tokens)
+    recoverable: (boolean: TRUE when the parser has a error recovery rule available for this particular error)
+  }
+*/
+var parser = (function(){
+var o=function(k,v,o,l){for(o=o||{},l=k.length;l--;o[k[l]]=v);return o},$V0=[1,9],$V1=[1,10],$V2=[1,13],$V3=[5,24],$V4=[5,10,11,13,24,27,28],$V5=[27,28];
+var parser = {trace: function trace() { },
+yy: {},
+symbols_: {"error":2,"expressions":3,"statements":4,"EOF":5,"statement":6,"newlines":7,"preStatement":8,"alphaNum":9,"COLON":10,"EQUALS":11,"callee":12,"DOT":13,"message":14,"action":15,"SQS":16,"SQE":17,"actorDefinition":18,"messageDefinition":19,"caller":20,"answer":21,"spaceList":22,"SPACE":23,"NEWLINE":24,"alphaNumStatement":25,"alphaNumToken":26,"ALPHA":27,"NUM":28,"text":29,"MINUS":30,"$accept":0,"$end":1},
+terminals_: {2:"error",5:"EOF",10:"COLON",11:"EQUALS",13:"DOT",16:"SQS",17:"SQE",23:"SPACE",24:"NEWLINE",27:"ALPHA",28:"NUM",30:"MINUS"},
+productions_: [0,[3,1],[3,1],[4,3],[4,2],[8,3],[6,1],[6,5],[15,2],[18,3],[19,7],[20,1],[21,1],[12,1],[14,1],[22,2],[22,1],[7,2],[7,1],[9,1],[25,2],[25,1],[26,1],[26,1],[29,3],[29,5],[29,1]],
+performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate /* action[1] */, $$ /* vstack */, _$ /* lstack */) {
+/* this == yyval */
+
+var $0 = $$.length - 1;
+switch (yystate) {
+case 1: case 19: case 22: case 23:
+this.$=$$[$0];
+break;
+case 3:
+this.$=$$[$0-2];
+break;
+case 4:
+this.$=$$[$0-1];
+break;
+case 5:
+console.log('Got new actor id='+$$[$0-2]+' descr='+$$[$0]);this.$={a:$$[$0-2],b:$$[$0]}
+break;
+case 6:
+console.log('Got new actor id='+$$[$0].a+' descr='+$$[$0].b);this.$='actor';
+break;
+case 7:
+console.log('Got new message from='+$$[$0-4].a+' to='+$$[$0-2]+' message='+$$[$0]+' answer='+$$[$0-4].b);this.$='actor';
+break;
+case 8:
+console.log('#a');this.$='action';
+break;
+case 9:
+console.log('Got new actor id='+$$[$0-2]+' descr='+$$[$0]);this.$='actor';
+break;
+case 10:
+console.log('Got new message from='+$$[$0-6]+' to='+$$[$0-2]+' message='+$$[$0]+' answer='+$$[$0-4]);this.$='actor';
+break;
+case 20:
+this.$=$$[$0-1]+''+$$[$0];
+break;
+case 24:
+this.$ = $$[$0-2] + ' ' +$$[$0];
+break;
+case 25:
+this.$ = $$[$0-4] + ' - ' +$$[$0];
+break;
+case 26:
+this.$ = $$[$0];
+break;
+}
+},
+table: [{3:1,4:2,5:[1,3],6:4,8:5,9:6,25:7,26:8,27:$V0,28:$V1},{1:[3]},{1:[2,1]},{1:[2,2]},{5:[1,12],7:11,24:$V2},o($V3,[2,6],{11:[1,14]}),{10:[1,15],26:16,27:$V0,28:$V1},o($V4,[2,19]),o($V4,[2,21]),o($V4,[2,22]),o($V4,[2,23]),{4:17,6:4,8:5,9:6,25:7,26:8,27:$V0,28:$V1},{1:[2,4]},o($V5,[2,18],{7:18,24:$V2}),{9:20,12:19,25:7,26:8,27:$V0,28:$V1},{9:21,25:7,26:8,27:$V0,28:$V1},o($V4,[2,20]),{1:[2,3]},o($V5,[2,17]),{13:[1,22]},{13:[2,13],26:16,27:$V0,28:$V1},o([5,11,24],[2,5],{26:16,27:$V0,28:$V1}),{9:24,14:23,25:7,26:8,27:$V0,28:$V1},o($V3,[2,7]),o($V3,[2,14],{26:16,27:$V0,28:$V1})],
+defaultActions: {2:[2,1],3:[2,2],12:[2,4],17:[2,3]},
+parseError: function parseError(str, hash) {
+    if (hash.recoverable) {
+        this.trace(str);
+    } else {
+        throw new Error(str);
+    }
+},
+parse: function parse(input) {
+    var self = this, stack = [0], tstack = [], vstack = [null], lstack = [], table = this.table, yytext = '', yylineno = 0, yyleng = 0, recovering = 0, TERROR = 2, EOF = 1;
+    var args = lstack.slice.call(arguments, 1);
+    var lexer = Object.create(this.lexer);
+    var sharedState = { yy: {} };
+    for (var k in this.yy) {
+        if (Object.prototype.hasOwnProperty.call(this.yy, k)) {
+            sharedState.yy[k] = this.yy[k];
+        }
+    }
+    lexer.setInput(input, sharedState.yy);
+    sharedState.yy.lexer = lexer;
+    sharedState.yy.parser = this;
+    if (typeof lexer.yylloc == 'undefined') {
+        lexer.yylloc = {};
+    }
+    var yyloc = lexer.yylloc;
+    lstack.push(yyloc);
+    var ranges = lexer.options && lexer.options.ranges;
+    if (typeof sharedState.yy.parseError === 'function') {
+        this.parseError = sharedState.yy.parseError;
+    } else {
+        this.parseError = Object.getPrototypeOf(this).parseError;
+    }
+    function popStack(n) {
+        stack.length = stack.length - 2 * n;
+        vstack.length = vstack.length - n;
+        lstack.length = lstack.length - n;
+    }
+    _token_stack:
+        function lex() {
+            var token;
+            token = lexer.lex() || EOF;
+            if (typeof token !== 'number') {
+                token = self.symbols_[token] || token;
+            }
+            return token;
+        }
+    var symbol, preErrorSymbol, state, action, a, r, yyval = {}, p, len, newState, expected;
+    while (true) {
+        state = stack[stack.length - 1];
+        if (this.defaultActions[state]) {
+            action = this.defaultActions[state];
+        } else {
+            if (symbol === null || typeof symbol == 'undefined') {
+                symbol = lex();
+            }
+            action = table[state] && table[state][symbol];
+        }
+                    if (typeof action === 'undefined' || !action.length || !action[0]) {
+                var errStr = '';
+                expected = [];
+                for (p in table[state]) {
+                    if (this.terminals_[p] && p > TERROR) {
+                        expected.push('\'' + this.terminals_[p] + '\'');
+                    }
+                }
+                if (lexer.showPosition) {
+                    errStr = 'Parse error on line ' + (yylineno + 1) + ':\n' + lexer.showPosition() + '\nExpecting ' + expected.join(', ') + ', got \'' + (this.terminals_[symbol] || symbol) + '\'';
+                } else {
+                    errStr = 'Parse error on line ' + (yylineno + 1) + ': Unexpected ' + (symbol == EOF ? 'end of input' : '\'' + (this.terminals_[symbol] || symbol) + '\'');
+                }
+                this.parseError(errStr, {
+                    text: lexer.match,
+                    token: this.terminals_[symbol] || symbol,
+                    line: lexer.yylineno,
+                    loc: yyloc,
+                    expected: expected
+                });
+            }
+        if (action[0] instanceof Array && action.length > 1) {
+            throw new Error('Parse Error: multiple actions possible at state: ' + state + ', token: ' + symbol);
+        }
+        switch (action[0]) {
+        case 1:
+            stack.push(symbol);
+            vstack.push(lexer.yytext);
+            lstack.push(lexer.yylloc);
+            stack.push(action[1]);
+            symbol = null;
+            if (!preErrorSymbol) {
+                yyleng = lexer.yyleng;
+                yytext = lexer.yytext;
+                yylineno = lexer.yylineno;
+                yyloc = lexer.yylloc;
+                if (recovering > 0) {
+                    recovering--;
+                }
+            } else {
+                symbol = preErrorSymbol;
+                preErrorSymbol = null;
+            }
+            break;
+        case 2:
+            len = this.productions_[action[1]][1];
+            yyval.$ = vstack[vstack.length - len];
+            yyval._$ = {
+                first_line: lstack[lstack.length - (len || 1)].first_line,
+                last_line: lstack[lstack.length - 1].last_line,
+                first_column: lstack[lstack.length - (len || 1)].first_column,
+                last_column: lstack[lstack.length - 1].last_column
+            };
+            if (ranges) {
+                yyval._$.range = [
+                    lstack[lstack.length - (len || 1)].range[0],
+                    lstack[lstack.length - 1].range[1]
+                ];
+            }
+            r = this.performAction.apply(yyval, [
+                yytext,
+                yyleng,
+                yylineno,
+                sharedState.yy,
+                action[1],
+                vstack,
+                lstack
+            ].concat(args));
+            if (typeof r !== 'undefined') {
+                return r;
+            }
+            if (len) {
+                stack = stack.slice(0, -1 * len * 2);
+                vstack = vstack.slice(0, -1 * len);
+                lstack = lstack.slice(0, -1 * len);
+            }
+            stack.push(this.productions_[action[1]][0]);
+            vstack.push(yyval.$);
+            lstack.push(yyval._$);
+            newState = table[stack[stack.length - 2]][stack[stack.length - 1]];
+            stack.push(newState);
+            break;
+        case 3:
+            return true;
+        }
+    }
+    return true;
+}};
+/* generated by jison-lex 0.3.4 */
+var lexer = (function(){
+var lexer = ({
+
+EOF:1,
+
+parseError:function parseError(str, hash) {
+        if (this.yy.parser) {
+            this.yy.parser.parseError(str, hash);
+        } else {
+            throw new Error(str);
+        }
+    },
+
+// resets the lexer, sets new input
+setInput:function (input, yy) {
+        this.yy = yy || this.yy || {};
+        this._input = input;
+        this._more = this._backtrack = this.done = false;
+        this.yylineno = this.yyleng = 0;
+        this.yytext = this.matched = this.match = '';
+        this.conditionStack = ['INITIAL'];
+        this.yylloc = {
+            first_line: 1,
+            first_column: 0,
+            last_line: 1,
+            last_column: 0
+        };
+        if (this.options.ranges) {
+            this.yylloc.range = [0,0];
+        }
+        this.offset = 0;
+        return this;
+    },
+
+// consumes and returns one char from the input
+input:function () {
+        var ch = this._input[0];
+        this.yytext += ch;
+        this.yyleng++;
+        this.offset++;
+        this.match += ch;
+        this.matched += ch;
+        var lines = ch.match(/(?:\r\n?|\n).*/g);
+        if (lines) {
+            this.yylineno++;
+            this.yylloc.last_line++;
+        } else {
+            this.yylloc.last_column++;
+        }
+        if (this.options.ranges) {
+            this.yylloc.range[1]++;
+        }
+
+        this._input = this._input.slice(1);
+        return ch;
+    },
+
+// unshifts one char (or a string) into the input
+unput:function (ch) {
+        var len = ch.length;
+        var lines = ch.split(/(?:\r\n?|\n)/g);
+
+        this._input = ch + this._input;
+        this.yytext = this.yytext.substr(0, this.yytext.length - len);
+        //this.yyleng -= len;
+        this.offset -= len;
+        var oldLines = this.match.split(/(?:\r\n?|\n)/g);
+        this.match = this.match.substr(0, this.match.length - 1);
+        this.matched = this.matched.substr(0, this.matched.length - 1);
+
+        if (lines.length - 1) {
+            this.yylineno -= lines.length - 1;
+        }
+        var r = this.yylloc.range;
+
+        this.yylloc = {
+            first_line: this.yylloc.first_line,
+            last_line: this.yylineno + 1,
+            first_column: this.yylloc.first_column,
+            last_column: lines ?
+                (lines.length === oldLines.length ? this.yylloc.first_column : 0)
+                 + oldLines[oldLines.length - lines.length].length - lines[0].length :
+              this.yylloc.first_column - len
+        };
+
+        if (this.options.ranges) {
+            this.yylloc.range = [r[0], r[0] + this.yyleng - len];
+        }
+        this.yyleng = this.yytext.length;
+        return this;
+    },
+
+// When called from action, caches matched text and appends it on next action
+more:function () {
+        this._more = true;
+        return this;
+    },
+
+// When called from action, signals the lexer that this rule fails to match the input, so the next matching rule (regex) should be tested instead.
+reject:function () {
+        if (this.options.backtrack_lexer) {
+            this._backtrack = true;
+        } else {
+            return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. You can only invoke reject() in the lexer when the lexer is of the backtracking persuasion (options.backtrack_lexer = true).\n' + this.showPosition(), {
+                text: "",
+                token: null,
+                line: this.yylineno
+            });
+
+        }
+        return this;
+    },
+
+// retain first n characters of the match
+less:function (n) {
+        this.unput(this.match.slice(n));
+    },
+
+// displays already matched input, i.e. for error messages
+pastInput:function () {
+        var past = this.matched.substr(0, this.matched.length - this.match.length);
+        return (past.length > 20 ? '...':'') + past.substr(-20).replace(/\n/g, "");
+    },
+
+// displays upcoming input, i.e. for error messages
+upcomingInput:function () {
+        var next = this.match;
+        if (next.length < 20) {
+            next += this._input.substr(0, 20-next.length);
+        }
+        return (next.substr(0,20) + (next.length > 20 ? '...' : '')).replace(/\n/g, "");
+    },
+
+// displays the character position where the lexing error occurred, i.e. for error messages
+showPosition:function () {
+        var pre = this.pastInput();
+        var c = new Array(pre.length + 1).join("-");
+        return pre + this.upcomingInput() + "\n" + c + "^";
+    },
+
+// test the lexed token: return FALSE when not a match, otherwise return token
+test_match:function (match, indexed_rule) {
+        var token,
+            lines,
+            backup;
+
+        if (this.options.backtrack_lexer) {
+            // save context
+            backup = {
+                yylineno: this.yylineno,
+                yylloc: {
+                    first_line: this.yylloc.first_line,
+                    last_line: this.last_line,
+                    first_column: this.yylloc.first_column,
+                    last_column: this.yylloc.last_column
+                },
+                yytext: this.yytext,
+                match: this.match,
+                matches: this.matches,
+                matched: this.matched,
+                yyleng: this.yyleng,
+                offset: this.offset,
+                _more: this._more,
+                _input: this._input,
+                yy: this.yy,
+                conditionStack: this.conditionStack.slice(0),
+                done: this.done
+            };
+            if (this.options.ranges) {
+                backup.yylloc.range = this.yylloc.range.slice(0);
+            }
+        }
+
+        lines = match[0].match(/(?:\r\n?|\n).*/g);
+        if (lines) {
+            this.yylineno += lines.length;
+        }
+        this.yylloc = {
+            first_line: this.yylloc.last_line,
+            last_line: this.yylineno + 1,
+            first_column: this.yylloc.last_column,
+            last_column: lines ?
+                         lines[lines.length - 1].length - lines[lines.length - 1].match(/\r?\n?/)[0].length :
+                         this.yylloc.last_column + match[0].length
+        };
+        this.yytext += match[0];
+        this.match += match[0];
+        this.matches = match;
+        this.yyleng = this.yytext.length;
+        if (this.options.ranges) {
+            this.yylloc.range = [this.offset, this.offset += this.yyleng];
+        }
+        this._more = false;
+        this._backtrack = false;
+        this._input = this._input.slice(match[0].length);
+        this.matched += match[0];
+        token = this.performAction.call(this, this.yy, this, indexed_rule, this.conditionStack[this.conditionStack.length - 1]);
+        if (this.done && this._input) {
+            this.done = false;
+        }
+        if (token) {
+            return token;
+        } else if (this._backtrack) {
+            // recover context
+            for (var k in backup) {
+                this[k] = backup[k];
+            }
+            return false; // rule action called reject() implying the next rule should be tested instead.
+        }
+        return false;
+    },
+
+// return next match in input
+next:function () {
+        if (this.done) {
+            return this.EOF;
+        }
+        if (!this._input) {
+            this.done = true;
+        }
+
+        var token,
+            match,
+            tempMatch,
+            index;
+        if (!this._more) {
+            this.yytext = '';
+            this.match = '';
+        }
+        var rules = this._currentRules();
+        for (var i = 0; i < rules.length; i++) {
+            tempMatch = this._input.match(this.rules[rules[i]]);
+            if (tempMatch && (!match || tempMatch[0].length > match[0].length)) {
+                match = tempMatch;
+                index = i;
+                if (this.options.backtrack_lexer) {
+                    token = this.test_match(tempMatch, rules[i]);
+                    if (token !== false) {
+                        return token;
+                    } else if (this._backtrack) {
+                        match = false;
+                        continue; // rule action called reject() implying a rule MISmatch.
+                    } else {
+                        // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
+                        return false;
+                    }
+                } else if (!this.options.flex) {
+                    break;
+                }
+            }
+        }
+        if (match) {
+            token = this.test_match(match, rules[index]);
+            if (token !== false) {
+                return token;
+            }
+            // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
+            return false;
+        }
+        if (this._input === "") {
+            return this.EOF;
+        } else {
+            return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. Unrecognized text.\n' + this.showPosition(), {
+                text: "",
+                token: null,
+                line: this.yylineno
+            });
+        }
+    },
+
+// return next match that has a token
+lex:function lex() {
+        var r = this.next();
+        if (r) {
+            return r;
+        } else {
+            return this.lex();
+        }
+    },
+
+// activates a new lexer condition state (pushes the new lexer condition state onto the condition stack)
+begin:function begin(condition) {
+        this.conditionStack.push(condition);
+    },
+
+// pop the previously active lexer condition state off the condition stack
+popState:function popState() {
+        var n = this.conditionStack.length - 1;
+        if (n > 0) {
+            return this.conditionStack.pop();
+        } else {
+            return this.conditionStack[0];
+        }
+    },
+
+// produce the lexer rule set which is active for the currently active lexer condition state
+_currentRules:function _currentRules() {
+        if (this.conditionStack.length && this.conditionStack[this.conditionStack.length - 1]) {
+            return this.conditions[this.conditionStack[this.conditionStack.length - 1]].rules;
+        } else {
+            return this.conditions["INITIAL"].rules;
+        }
+    },
+
+// return the currently active lexer condition state; when an index argument is provided it produces the N-th previous condition state, if available
+topState:function topState(n) {
+        n = this.conditionStack.length - 1 - Math.abs(n || 0);
+        if (n >= 0) {
+            return this.conditionStack[n];
+        } else {
+            return "INITIAL";
+        }
+    },
+
+// alias for begin(condition)
+pushState:function pushState(condition) {
+        this.begin(condition);
+    },
+
+// return the number of states currently on the stack
+stateStackSize:function stateStackSize() {
+        return this.conditionStack.length;
+    },
+options: {},
+performAction: function anonymous(yy,yy_,$avoiding_name_collisions,YY_START) {
+var YYSTATE=YY_START;
+switch($avoiding_name_collisions) {
+case 0:return 24;
+break;
+case 1:return 28;
+break;
+case 2:return 10;
+break;
+case 3:return 30;
+break;
+case 4:return 'PLUS';
+break;
+case 5:return 11;
+break;
+case 6:return 27;
+break;
+case 7:return 'SLASH';
+break;
+case 8:return 'PS';
+break;
+case 9:return 'PE';
+break;
+case 10:return 16;
+break;
+case 11:return 17;
+break;
+case 12:return 13;
+break;
+case 13:return 23;
+break;
+case 14:return 5;
+break;
+}
+},
+rules: [/^(?:\n)/,/^(?:[0-9]+)/,/^(?::)/,/^(?:-)/,/^(?:\+)/,/^(?:=)/,/^(?:[a-zåäöæøA-ZÅÄÖÆØ]+)/,/^(?:\/)/,/^(?:\()/,/^(?:\))/,/^(?:\[)/,/^(?:\])/,/^(?:\.)/,/^(?:\s)/,/^(?:$)/],
+conditions: {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14],"inclusive":true}}
+});
+return lexer;
+})();
+parser.lexer = lexer;
+function Parser () {
+  this.yy = {};
+}
+Parser.prototype = parser;parser.Parser = Parser;
+return new Parser;
+})();
+
+
+if (typeof require !== 'undefined' && typeof exports !== 'undefined') {
+exports.parser = parser;
+exports.Parser = parser.Parser;
+exports.parse = function () { return parser.parse.apply(parser, arguments); };
+exports.main = function commonjsMain(args) {
+    if (!args[1]) {
+        console.log('Usage: '+args[0]+' FILE');
+        process.exit(1);
+    }
+    var source = require('fs').readFileSync(require('path').normalize(args[1]), "utf8");
+    return exports.parser.parse(source);
+};
+if (typeof module !== 'undefined' && require.main === module) {
+  exports.main(process.argv.slice(1));
+}
+}
\ No newline at end of file
diff --git a/src/sequence.spc.js b/src/sequence.spc.js
new file mode 100644
index 000000000..84b4a1dee
--- /dev/null
+++ b/src/sequence.spc.js
@@ -0,0 +1,24 @@
+/**
+ * Created by knut on 14-11-18.
+ */
+var sq = require('./parser/sequence').parser;
+
+//console.log(sq.parse('a12:d12\na24:d24'));
+
+str = 'a12:d12\n\na24:d24';
+//console.log(str);
+//console.log(sq.parse(str));
+//console.log(sq.parse('[]\n[]'));
+
+str = 'bfs:queue\n\nbfs3:queue\n';
+str =  str + 'bfs:message=someNode.setLevel\n';
+str =  str + 'bfs:message2=someNode.setLevel2';
+console.log(str);
+console.log(sq.parse(str));
+
+str = 'bfs:BFS\n';
+str = str + 'someNode:SomeNode\n';
+str = str + 'bfs:queue.new\n';
+str = str + 'bfs:someNode.setLevel';
+//console.log(str);
+//console.log(sq.parse(str));