diff --git a/packages/mini/krill-parser.js b/packages/mini/krill-parser.js
index ac9e83096..b482d96c3 100644
--- a/packages/mini/krill-parser.js
+++ b/packages/mini/krill-parser.js
@@ -288,48 +288,50 @@ function peg$parse(input, options) {
 
   var peg$f0 = function() { return parseFloat(text()); };
   var peg$f1 = function() { return parseInt(text()); };
-  var peg$f2 = function(chars) { return new AtomStub(chars.join("")) };
-  var peg$f3 = function(s) { return s };
-  var peg$f4 = function(s, stepsPerCycle) { s.arguments_.stepsPerCycle = stepsPerCycle ; return s; };
-  var peg$f5 = function(a) { return a };
-  var peg$f6 = function(s) { s.arguments_.alignment = 'polymeter_slowcat'; return s; };
-  var peg$f7 = function(a) { return x => x.options_['weight'] = a };
-  var peg$f8 = function(a) { return x => x.options_['reps'] = a };
-  var peg$f9 = function(p, s, r) { return x => x.options_['ops'].push({ type_: "bjorklund", arguments_ :{ pulse: p, step:s, rotation:r }}) };
-  var peg$f10 = function(a) { return x => x.options_['ops'].push({ type_: "stretch", arguments_ :{ amount:a, type: 'slow' }}) };
-  var peg$f11 = function(a) { return x => x.options_['ops'].push({ type_: "stretch", arguments_ :{ amount:a, type: 'fast' }}) };
-  var peg$f12 = function(a) { return x => x.options_['ops'].push({ type_: "degradeBy", arguments_ :{ amount:a, seed: seed++ } }) };
-  var peg$f13 = function(s) { return x => x.options_['ops'].push({ type_: "tail", arguments_ :{ element:s } }) };
-  var peg$f14 = function(s) { return x => x.options_['ops'].push({ type_: "range", arguments_ :{ element:s } }) };
-  var peg$f15 = function(s, ops) { const result = new ElementStub(s, {ops: [], weight: 1, reps: 1});
+  var peg$f2 = function(chars) { const s = chars.join(""); return (s === ".") || (s === "_") };
+  var peg$f3 = function(chars) { return new AtomStub(chars.join("")) };
+  var peg$f4 = function(s) { return s };
+  var peg$f5 = function(s, stepsPerCycle) { s.arguments_.stepsPerCycle = stepsPerCycle ; return s; };
+  var peg$f6 = function(a) { return a };
+  var peg$f7 = function(s) { s.arguments_.alignment = 'polymeter_slowcat'; return s; };
+  var peg$f8 = function(a) { return x => x.options_['weight'] = (x.options_['weight'] ?? 1) + (a ?? 2) - 1 };
+  var peg$f9 = function(a) { return x => x.options_['reps'] = (x.options_['reps'] ?? 1) + (a ?? 2) - 1 };
+  var peg$f10 = function(p, s, r) { return x => x.options_['ops'].push({ type_: "bjorklund", arguments_ :{ pulse: p, step:s, rotation:r }}) };
+  var peg$f11 = function(a) { return x => x.options_['ops'].push({ type_: "stretch", arguments_ :{ amount:a, type: 'slow' }}) };
+  var peg$f12 = function(a) { return x => x.options_['ops'].push({ type_: "stretch", arguments_ :{ amount:a, type: 'fast' }}) };
+  var peg$f13 = function(a) { return x => x.options_['ops'].push({ type_: "degradeBy", arguments_ :{ amount:a, seed: seed++ } }) };
+  var peg$f14 = function(s) { return x => x.options_['ops'].push({ type_: "tail", arguments_ :{ element:s } }) };
+  var peg$f15 = function(s) { return x => x.options_['ops'].push({ type_: "range", arguments_ :{ element:s } }) };
+  var peg$f16 = function(s, ops) { const result = new ElementStub(s, {ops: [], weight: 1, reps: 1});
     for (const op of ops) {
       op(result);
     }
     return result;
   };
-  var peg$f16 = function(s) { return new PatternStub(s, 'fastcat'); };
-  var peg$f17 = function(tail) { return { alignment: 'stack', list: tail }; };
-  var peg$f18 = function(tail) { return { alignment: 'rand', list: tail, seed: seed++ }; };
-  var peg$f19 = function(head, tail) { if (tail && tail.list.length > 0) { return new PatternStub([head, ...tail.list], tail.alignment, tail.seed); } else { return head; } };
-  var peg$f20 = function(head, tail) { return new PatternStub(tail ? [head, ...tail.list] : [head], 'polymeter'); };
-  var peg$f21 = function(sc) { return sc; };
-  var peg$f22 = function(s) { return { name: "struct", args: { mini:s }}};
-  var peg$f23 = function(s) { return { name: "target", args : { name:s}}};
-  var peg$f24 = function(p, s, r) { return { name: "bjorklund", args :{ pulse: p, step:parseInt(s) }}};
-  var peg$f25 = function(a) { return { name: "stretch", args :{ amount: a}}};
-  var peg$f26 = function(a) { return { name: "shift", args :{ amount: "-"+a}}};
-  var peg$f27 = function(a) { return { name: "shift", args :{ amount: a}}};
-  var peg$f28 = function(a) { return { name: "stretch", args :{ amount: "1/"+a}}};
-  var peg$f29 = function(s) { return { name: "scale", args :{ scale: s.join("")}}};
-  var peg$f30 = function(s, v) { return v};
-  var peg$f31 = function(s, ss) { ss.unshift(s); return new PatternStub(ss, 'slowcat'); };
-  var peg$f32 = function(sg) {return sg};
-  var peg$f33 = function(o, soc) { return new OperatorStub(o.name,o.args,soc)};
-  var peg$f34 = function(sc) { return sc };
-  var peg$f35 = function(c) { return c };
-  var peg$f36 = function(v) { return new CommandStub("setcps", { value: v})};
-  var peg$f37 = function(v) { return new CommandStub("setcps", { value: (v/120/2)})};
-  var peg$f38 = function() { return new CommandStub("hush")};
+  var peg$f17 = function(s) { return new PatternStub(s, 'fastcat'); };
+  var peg$f18 = function(tail) { return { alignment: 'stack', list: tail }; };
+  var peg$f19 = function(tail) { return { alignment: 'rand', list: tail, seed: seed++ }; };
+  var peg$f20 = function(tail) { return { alignment: 'feet', list: tail, seed: seed++ }; };
+  var peg$f21 = function(head, tail) { if (tail && tail.list.length > 0) { return new PatternStub([head, ...tail.list], tail.alignment, tail.seed); } else { return head; } };
+  var peg$f22 = function(head, tail) { return new PatternStub(tail ? [head, ...tail.list] : [head], 'polymeter'); };
+  var peg$f23 = function(sc) { return sc; };
+  var peg$f24 = function(s) { return { name: "struct", args: { mini:s }}};
+  var peg$f25 = function(s) { return { name: "target", args : { name:s}}};
+  var peg$f26 = function(p, s, r) { return { name: "bjorklund", args :{ pulse: p, step:parseInt(s) }}};
+  var peg$f27 = function(a) { return { name: "stretch", args :{ amount: a}}};
+  var peg$f28 = function(a) { return { name: "shift", args :{ amount: "-"+a}}};
+  var peg$f29 = function(a) { return { name: "shift", args :{ amount: a}}};
+  var peg$f30 = function(a) { return { name: "stretch", args :{ amount: "1/"+a}}};
+  var peg$f31 = function(s) { return { name: "scale", args :{ scale: s.join("")}}};
+  var peg$f32 = function(s, v) { return v};
+  var peg$f33 = function(s, ss) { ss.unshift(s); return new PatternStub(ss, 'slowcat'); };
+  var peg$f34 = function(sg) {return sg};
+  var peg$f35 = function(o, soc) { return new OperatorStub(o.name,o.args,soc)};
+  var peg$f36 = function(sc) { return sc };
+  var peg$f37 = function(c) { return c };
+  var peg$f38 = function(v) { return new CommandStub("setcps", { value: v})};
+  var peg$f39 = function(v) { return new CommandStub("setcps", { value: (v/120/2)})};
+  var peg$f40 = function() { return new CommandStub("hush")};
   var peg$currPos = 0;
   var peg$savedPos = 0;
   var peg$posDetailsCache = [{ line: 1, column: 1 }];
@@ -821,6 +823,30 @@ function peg$parse(input, options) {
     return s0;
   }
 
+  function peg$parsedot() {
+    var s0, s1, s2, s3;
+
+    s0 = peg$currPos;
+    s1 = peg$parsews();
+    if (input.charCodeAt(peg$currPos) === 46) {
+      s2 = peg$c0;
+      peg$currPos++;
+    } else {
+      s2 = peg$FAILED;
+      if (peg$silentFails === 0) { peg$fail(peg$e1); }
+    }
+    if (s2 !== peg$FAILED) {
+      s3 = peg$parsews();
+      s1 = [s1, s2, s3];
+      s0 = s1;
+    } else {
+      peg$currPos = s0;
+      s0 = peg$FAILED;
+    }
+
+    return s0;
+  }
+
   function peg$parsequote() {
     var s0;
 
@@ -913,7 +939,7 @@ function peg$parse(input, options) {
   }
 
   function peg$parsestep() {
-    var s0, s1, s2, s3;
+    var s0, s1, s2, s3, s4;
 
     s0 = peg$currPos;
     s1 = peg$parsews();
@@ -929,8 +955,20 @@ function peg$parse(input, options) {
     }
     if (s2 !== peg$FAILED) {
       s3 = peg$parsews();
-      peg$savedPos = s0;
-      s0 = peg$f2(s2);
+      peg$savedPos = peg$currPos;
+      s4 = peg$f2(s2);
+      if (s4) {
+        s4 = peg$FAILED;
+      } else {
+        s4 = undefined;
+      }
+      if (s4 !== peg$FAILED) {
+        peg$savedPos = s0;
+        s0 = peg$f3(s2);
+      } else {
+        peg$currPos = s0;
+        s0 = peg$FAILED;
+      }
     } else {
       peg$currPos = s0;
       s0 = peg$FAILED;
@@ -966,7 +1004,7 @@ function peg$parse(input, options) {
         if (s6 !== peg$FAILED) {
           s7 = peg$parsews();
           peg$savedPos = s0;
-          s0 = peg$f3(s4);
+          s0 = peg$f4(s4);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -1014,7 +1052,7 @@ function peg$parse(input, options) {
           }
           s8 = peg$parsews();
           peg$savedPos = s0;
-          s0 = peg$f4(s4, s7);
+          s0 = peg$f5(s4, s7);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -1046,7 +1084,7 @@ function peg$parse(input, options) {
       s2 = peg$parseslice();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f5(s2);
+        s0 = peg$f6(s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1086,7 +1124,7 @@ function peg$parse(input, options) {
         if (s6 !== peg$FAILED) {
           s7 = peg$parsews();
           peg$savedPos = s0;
-          s0 = peg$f6(s4);
+          s0 = peg$f7(s4);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -1150,25 +1188,33 @@ function peg$parse(input, options) {
   }
 
   function peg$parseop_weight() {
-    var s0, s1, s2;
+    var s0, s1, s2, s3;
 
     s0 = peg$currPos;
+    s1 = peg$parsews();
     if (input.charCodeAt(peg$currPos) === 64) {
-      s1 = peg$c18;
+      s2 = peg$c18;
       peg$currPos++;
     } else {
-      s1 = peg$FAILED;
+      s2 = peg$FAILED;
       if (peg$silentFails === 0) { peg$fail(peg$e26); }
     }
-    if (s1 !== peg$FAILED) {
-      s2 = peg$parsenumber();
-      if (s2 !== peg$FAILED) {
-        peg$savedPos = s0;
-        s0 = peg$f7(s2);
+    if (s2 === peg$FAILED) {
+      if (input.charCodeAt(peg$currPos) === 95) {
+        s2 = peg$c10;
+        peg$currPos++;
       } else {
-        peg$currPos = s0;
-        s0 = peg$FAILED;
+        s2 = peg$FAILED;
+        if (peg$silentFails === 0) { peg$fail(peg$e18); }
+      }
+    }
+    if (s2 !== peg$FAILED) {
+      s3 = peg$parsenumber();
+      if (s3 === peg$FAILED) {
+        s3 = null;
       }
+      peg$savedPos = s0;
+      s0 = peg$f8(s3);
     } else {
       peg$currPos = s0;
       s0 = peg$FAILED;
@@ -1178,25 +1224,24 @@ function peg$parse(input, options) {
   }
 
   function peg$parseop_replicate() {
-    var s0, s1, s2;
+    var s0, s1, s2, s3;
 
     s0 = peg$currPos;
+    s1 = peg$parsews();
     if (input.charCodeAt(peg$currPos) === 33) {
-      s1 = peg$c19;
+      s2 = peg$c19;
       peg$currPos++;
     } else {
-      s1 = peg$FAILED;
+      s2 = peg$FAILED;
       if (peg$silentFails === 0) { peg$fail(peg$e27); }
     }
-    if (s1 !== peg$FAILED) {
-      s2 = peg$parsenumber();
-      if (s2 !== peg$FAILED) {
-        peg$savedPos = s0;
-        s0 = peg$f8(s2);
-      } else {
-        peg$currPos = s0;
-        s0 = peg$FAILED;
+    if (s2 !== peg$FAILED) {
+      s3 = peg$parsenumber();
+      if (s3 === peg$FAILED) {
+        s3 = null;
       }
+      peg$savedPos = s0;
+      s0 = peg$f9(s3);
     } else {
       peg$currPos = s0;
       s0 = peg$FAILED;
@@ -1246,7 +1291,7 @@ function peg$parse(input, options) {
             }
             if (s13 !== peg$FAILED) {
               peg$savedPos = s0;
-              s0 = peg$f9(s3, s7, s11);
+              s0 = peg$f10(s3, s7, s11);
             } else {
               peg$currPos = s0;
               s0 = peg$FAILED;
@@ -1286,7 +1331,7 @@ function peg$parse(input, options) {
       s2 = peg$parseslice();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f10(s2);
+        s0 = peg$f11(s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1314,7 +1359,7 @@ function peg$parse(input, options) {
       s2 = peg$parseslice();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f11(s2);
+        s0 = peg$f12(s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1344,7 +1389,7 @@ function peg$parse(input, options) {
         s2 = null;
       }
       peg$savedPos = s0;
-      s0 = peg$f12(s2);
+      s0 = peg$f13(s2);
     } else {
       peg$currPos = s0;
       s0 = peg$FAILED;
@@ -1368,7 +1413,7 @@ function peg$parse(input, options) {
       s2 = peg$parseslice();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f13(s2);
+        s0 = peg$f14(s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1396,7 +1441,7 @@ function peg$parse(input, options) {
       s2 = peg$parseslice();
       if (s2 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f14(s2);
+        s0 = peg$f15(s2);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1422,7 +1467,7 @@ function peg$parse(input, options) {
         s3 = peg$parseslice_op();
       }
       peg$savedPos = s0;
-      s0 = peg$f15(s1, s2);
+      s0 = peg$f16(s1, s2);
     } else {
       peg$currPos = s0;
       s0 = peg$FAILED;
@@ -1447,7 +1492,7 @@ function peg$parse(input, options) {
     }
     if (s1 !== peg$FAILED) {
       peg$savedPos = s0;
-      s1 = peg$f16(s1);
+      s1 = peg$f17(s1);
     }
     s0 = s1;
 
@@ -1496,7 +1541,7 @@ function peg$parse(input, options) {
     }
     if (s1 !== peg$FAILED) {
       peg$savedPos = s0;
-      s1 = peg$f17(s1);
+      s1 = peg$f18(s1);
     }
     s0 = s1;
 
@@ -1545,7 +1590,56 @@ function peg$parse(input, options) {
     }
     if (s1 !== peg$FAILED) {
       peg$savedPos = s0;
-      s1 = peg$f18(s1);
+      s1 = peg$f19(s1);
+    }
+    s0 = s1;
+
+    return s0;
+  }
+
+  function peg$parsedot_tail() {
+    var s0, s1, s2, s3, s4;
+
+    s0 = peg$currPos;
+    s1 = [];
+    s2 = peg$currPos;
+    s3 = peg$parsedot();
+    if (s3 !== peg$FAILED) {
+      s4 = peg$parsesequence();
+      if (s4 !== peg$FAILED) {
+        s2 = s4;
+      } else {
+        peg$currPos = s2;
+        s2 = peg$FAILED;
+      }
+    } else {
+      peg$currPos = s2;
+      s2 = peg$FAILED;
+    }
+    if (s2 !== peg$FAILED) {
+      while (s2 !== peg$FAILED) {
+        s1.push(s2);
+        s2 = peg$currPos;
+        s3 = peg$parsedot();
+        if (s3 !== peg$FAILED) {
+          s4 = peg$parsesequence();
+          if (s4 !== peg$FAILED) {
+            s2 = s4;
+          } else {
+            peg$currPos = s2;
+            s2 = peg$FAILED;
+          }
+        } else {
+          peg$currPos = s2;
+          s2 = peg$FAILED;
+        }
+      }
+    } else {
+      s1 = peg$FAILED;
+    }
+    if (s1 !== peg$FAILED) {
+      peg$savedPos = s0;
+      s1 = peg$f20(s1);
     }
     s0 = s1;
 
@@ -1561,12 +1655,15 @@ function peg$parse(input, options) {
       s2 = peg$parsestack_tail();
       if (s2 === peg$FAILED) {
         s2 = peg$parsechoose_tail();
+        if (s2 === peg$FAILED) {
+          s2 = peg$parsedot_tail();
+        }
       }
       if (s2 === peg$FAILED) {
         s2 = null;
       }
       peg$savedPos = s0;
-      s0 = peg$f19(s1, s2);
+      s0 = peg$f21(s1, s2);
     } else {
       peg$currPos = s0;
       s0 = peg$FAILED;
@@ -1586,7 +1683,7 @@ function peg$parse(input, options) {
         s2 = null;
       }
       peg$savedPos = s0;
-      s0 = peg$f20(s1, s2);
+      s0 = peg$f22(s1, s2);
     } else {
       peg$currPos = s0;
       s0 = peg$FAILED;
@@ -1609,7 +1706,7 @@ function peg$parse(input, options) {
         s6 = peg$parsequote();
         if (s6 !== peg$FAILED) {
           peg$savedPos = s0;
-          s0 = peg$f21(s4);
+          s0 = peg$f23(s4);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -1671,7 +1768,7 @@ function peg$parse(input, options) {
       s3 = peg$parsemini_or_operator();
       if (s3 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f22(s3);
+        s0 = peg$f24(s3);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1704,7 +1801,7 @@ function peg$parse(input, options) {
           s5 = peg$parsequote();
           if (s5 !== peg$FAILED) {
             peg$savedPos = s0;
-            s0 = peg$f23(s4);
+            s0 = peg$f25(s4);
           } else {
             peg$currPos = s0;
             s0 = peg$FAILED;
@@ -1749,7 +1846,7 @@ function peg$parse(input, options) {
             s7 = null;
           }
           peg$savedPos = s0;
-          s0 = peg$f24(s3, s5, s7);
+          s0 = peg$f26(s3, s5, s7);
         } else {
           peg$currPos = s0;
           s0 = peg$FAILED;
@@ -1782,7 +1879,7 @@ function peg$parse(input, options) {
       s3 = peg$parsenumber();
       if (s3 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f25(s3);
+        s0 = peg$f27(s3);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1811,7 +1908,7 @@ function peg$parse(input, options) {
       s3 = peg$parsenumber();
       if (s3 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f26(s3);
+        s0 = peg$f28(s3);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1840,7 +1937,7 @@ function peg$parse(input, options) {
       s3 = peg$parsenumber();
       if (s3 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f27(s3);
+        s0 = peg$f29(s3);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1869,7 +1966,7 @@ function peg$parse(input, options) {
       s3 = peg$parsenumber();
       if (s3 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f28(s3);
+        s0 = peg$f30(s3);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -1911,7 +2008,7 @@ function peg$parse(input, options) {
           s5 = peg$parsequote();
           if (s5 !== peg$FAILED) {
             peg$savedPos = s0;
-            s0 = peg$f29(s4);
+            s0 = peg$f31(s4);
           } else {
             peg$currPos = s0;
             s0 = peg$FAILED;
@@ -2003,7 +2100,7 @@ function peg$parse(input, options) {
             s9 = peg$parsemini_or_operator();
             if (s9 !== peg$FAILED) {
               peg$savedPos = s7;
-              s7 = peg$f30(s5, s9);
+              s7 = peg$f32(s5, s9);
             } else {
               peg$currPos = s7;
               s7 = peg$FAILED;
@@ -2020,7 +2117,7 @@ function peg$parse(input, options) {
               s9 = peg$parsemini_or_operator();
               if (s9 !== peg$FAILED) {
                 peg$savedPos = s7;
-                s7 = peg$f30(s5, s9);
+                s7 = peg$f32(s5, s9);
               } else {
                 peg$currPos = s7;
                 s7 = peg$FAILED;
@@ -2040,7 +2137,7 @@ function peg$parse(input, options) {
           }
           if (s8 !== peg$FAILED) {
             peg$savedPos = s0;
-            s0 = peg$f31(s5, s6);
+            s0 = peg$f33(s5, s6);
           } else {
             peg$currPos = s0;
             s0 = peg$FAILED;
@@ -2086,7 +2183,7 @@ function peg$parse(input, options) {
         s4 = peg$parsecomment();
       }
       peg$savedPos = s0;
-      s0 = peg$f32(s1);
+      s0 = peg$f34(s1);
     } else {
       peg$currPos = s0;
       s0 = peg$FAILED;
@@ -2108,7 +2205,7 @@ function peg$parse(input, options) {
           s5 = peg$parsemini_or_operator();
           if (s5 !== peg$FAILED) {
             peg$savedPos = s0;
-            s0 = peg$f33(s1, s5);
+            s0 = peg$f35(s1, s5);
           } else {
             peg$currPos = s0;
             s0 = peg$FAILED;
@@ -2133,7 +2230,7 @@ function peg$parse(input, options) {
     s1 = peg$parsemini_or_operator();
     if (s1 !== peg$FAILED) {
       peg$savedPos = s0;
-      s1 = peg$f34(s1);
+      s1 = peg$f36(s1);
     }
     s0 = s1;
     if (s0 === peg$FAILED) {
@@ -2166,7 +2263,7 @@ function peg$parse(input, options) {
     if (s2 !== peg$FAILED) {
       s3 = peg$parsews();
       peg$savedPos = s0;
-      s0 = peg$f35(s2);
+      s0 = peg$f37(s2);
     } else {
       peg$currPos = s0;
       s0 = peg$FAILED;
@@ -2191,7 +2288,7 @@ function peg$parse(input, options) {
       s3 = peg$parsenumber();
       if (s3 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f36(s3);
+        s0 = peg$f38(s3);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -2220,7 +2317,7 @@ function peg$parse(input, options) {
       s3 = peg$parsenumber();
       if (s3 !== peg$FAILED) {
         peg$savedPos = s0;
-        s0 = peg$f37(s3);
+        s0 = peg$f39(s3);
       } else {
         peg$currPos = s0;
         s0 = peg$FAILED;
@@ -2246,7 +2343,7 @@ function peg$parse(input, options) {
     }
     if (s1 !== peg$FAILED) {
       peg$savedPos = s0;
-      s1 = peg$f38();
+      s1 = peg$f40();
     }
     s0 = s1;
 
diff --git a/packages/mini/krill.pegjs b/packages/mini/krill.pegjs
index da941049c..18764a34b 100644
--- a/packages/mini/krill.pegjs
+++ b/packages/mini/krill.pegjs
@@ -98,6 +98,7 @@ DIGIT  = [0-9]
 ws "whitespace" = [ \n\r\t\u00A0]*
 comma = ws "," ws
 pipe = ws "|" ws
+dot = ws "." ws
 quote = '"' / "'"
 
 // ------------------ steps and cycles ---------------------------
@@ -105,7 +106,8 @@ quote = '"' / "'"
 // single step definition (e.g bd)
 step_char "a letter, a number, \"-\", \"#\", \".\", \"^\", \"_\"" = 
   unicode_letter / [0-9~] / "-" / "#" / "." / "^" / "_"
-step = ws chars:step_char+ ws { return new AtomStub(chars.join("")) }
+
+step = ws chars:step_char+ ws !{ const s = chars.join(""); return (s === ".") || (s === "_") } { return new AtomStub(chars.join("")) }
 
 // define a sub cycle e.g. [1 2, 3 [4]]
 sub_cycle = ws  "[" ws s:stack_or_choose ws "]" ws { return s }
@@ -129,11 +131,11 @@ slice = step / sub_cycle / polymeter / slow_sequence
 // at this point, we assume we can represent them as regular sequence operators
 slice_op = op_weight / op_bjorklund / op_slow / op_fast / op_replicate / op_degrade / op_tail / op_range
 
-op_weight =  "@" a:number
-  { return x => x.options_['weight'] = a }
+op_weight = ws ("@" / "_") a:number?
+  { return x => x.options_['weight'] = (x.options_['weight'] ?? 1) + (a ?? 2) - 1 }
   
-op_replicate = "!"a:number
-  { return x => x.options_['reps'] = a }
+op_replicate = ws "!" a:number?
+  { return x => x.options_['reps'] = (x.options_['reps'] ?? 1) + (a ?? 2) - 1 }
 
 op_bjorklund = "(" ws p:slice_with_ops ws comma ws s:slice_with_ops ws comma? ws r:slice_with_ops? ws ")"
   { return x => x.options_['ops'].push({ type_: "bjorklund", arguments_ :{ pulse: p, step:s, rotation:r }}) }
@@ -175,9 +177,13 @@ stack_tail = tail:(comma @sequence)+
 choose_tail = tail:(pipe @sequence)+
   { return { alignment: 'rand', list: tail, seed: seed++ }; }
 
+// a foot separates subsequences, as an alternative to wrapping them in []
+dot_tail = tail:(dot @sequence)+
+  { return { alignment: 'feet', list: tail, seed: seed++ }; }
+
 // if the stack contains only one element, we don't create a stack but return the
 // underlying element
-stack_or_choose = head:sequence tail:(stack_tail / choose_tail)?
+stack_or_choose = head:sequence tail:(stack_tail / choose_tail / dot_tail)?
   { if (tail && tail.list.length > 0) { return new PatternStub([head, ...tail.list], tail.alignment, tail.seed); } else { return head; } }
 
 polymeter_stack = head:sequence tail:stack_tail?
@@ -287,4 +293,4 @@ Lt = [\u01C5\u01C8\u01CB\u01F2\u1F88-\u1F8F\u1F98-\u1F9F\u1FA8-\u1FAF\u1FBC\u1FC
 Lu = [\u0041-\u005A\u00C0-\u00D6\u00D8-\u00DE\u0100\u0102\u0104\u0106\u0108\u010A\u010C\u010E\u0110\u0112\u0114\u0116\u0118\u011A\u011C\u011E\u0120\u0122\u0124\u0126\u0128\u012A\u012C\u012E\u0130\u0132\u0134\u0136\u0139\u013B\u013D\u013F\u0141\u0143\u0145\u0147\u014A\u014C\u014E\u0150\u0152\u0154\u0156\u0158\u015A\u015C\u015E\u0160\u0162\u0164\u0166\u0168\u016A\u016C\u016E\u0170\u0172\u0174\u0176\u0178-\u0179\u017B\u017D\u0181-\u0182\u0184\u0186-\u0187\u0189-\u018B\u018E-\u0191\u0193-\u0194\u0196-\u0198\u019C-\u019D\u019F-\u01A0\u01A2\u01A4\u01A6-\u01A7\u01A9\u01AC\u01AE-\u01AF\u01B1-\u01B3\u01B5\u01B7-\u01B8\u01BC\u01C4\u01C7\u01CA\u01CD\u01CF\u01D1\u01D3\u01D5\u01D7\u01D9\u01DB\u01DE\u01E0\u01E2\u01E4\u01E6\u01E8\u01EA\u01EC\u01EE\u01F1\u01F4\u01F6-\u01F8\u01FA\u01FC\u01FE\u0200\u0202\u0204\u0206\u0208\u020A\u020C\u020E\u0210\u0212\u0214\u0216\u0218\u021A\u021C\u021E\u0220\u0222\u0224\u0226\u0228\u022A\u022C\u022E\u0230\u0232\u023A-\u023B\u023D-\u023E\u0241\u0243-\u0246\u0248\u024A\u024C\u024E\u0370\u0372\u0376\u037F\u0386\u0388-\u038A\u038C\u038E-\u038F\u0391-\u03A1\u03A3-\u03AB\u03CF\u03D2-\u03D4\u03D8\u03DA\u03DC\u03DE\u03E0\u03E2\u03E4\u03E6\u03E8\u03EA\u03EC\u03EE\u03F4\u03F7\u03F9-\u03FA\u03FD-\u042F\u0460\u0462\u0464\u0466\u0468\u046A\u046C\u046E\u0470\u0472\u0474\u0476\u0478\u047A\u047C\u047E\u0480\u048A\u048C\u048E\u0490\u0492\u0494\u0496\u0498\u049A\u049C\u049E\u04A0\u04A2\u04A4\u04A6\u04A8\u04AA\u04AC\u04AE\u04B0\u04B2\u04B4\u04B6\u04B8\u04BA\u04BC\u04BE\u04C0-\u04C1\u04C3\u04C5\u04C7\u04C9\u04CB\u04CD\u04D0\u04D2\u04D4\u04D6\u04D8\u04DA\u04DC\u04DE\u04E0\u04E2\u04E4\u04E6\u04E8\u04EA\u04EC\u04EE\u04F0\u04F2\u04F4\u04F6\u04F8\u04FA\u04FC\u04FE\u0500\u0502\u0504\u0506\u0508\u050A\u050C\u050E\u0510\u0512\u0514\u0516\u0518\u051A\u051C\u051E\u0520\u0522\u0524\u0526\u0528\u052A\u052C\u052E\u0531-\u0556\u10A0-\u10C5\u10C7\u10CD\u13A0-\u13F5\u1C90-\u1CBA\u1CBD-\u1CBF\u1E00\u1E02\u1E04\u1E06\u1E08\u1E0A\u1E0C\u1E0E\u1E10\u1E12\u1E14\u1E16\u1E18\u1E1A\u1E1C\u1E1E\u1E20\u1E22\u1E24\u1E26\u1E28\u1E2A\u1E2C\u1E2E\u1E30\u1E32\u1E34\u1E36\u1E38\u1E3A\u1E3C\u1E3E\u1E40\u1E42\u1E44\u1E46\u1E48\u1E4A\u1E4C\u1E4E\u1E50\u1E52\u1E54\u1E56\u1E58\u1E5A\u1E5C\u1E5E\u1E60\u1E62\u1E64\u1E66\u1E68\u1E6A\u1E6C\u1E6E\u1E70\u1E72\u1E74\u1E76\u1E78\u1E7A\u1E7C\u1E7E\u1E80\u1E82\u1E84\u1E86\u1E88\u1E8A\u1E8C\u1E8E\u1E90\u1E92\u1E94\u1E9E\u1EA0\u1EA2\u1EA4\u1EA6\u1EA8\u1EAA\u1EAC\u1EAE\u1EB0\u1EB2\u1EB4\u1EB6\u1EB8\u1EBA\u1EBC\u1EBE\u1EC0\u1EC2\u1EC4\u1EC6\u1EC8\u1ECA\u1ECC\u1ECE\u1ED0\u1ED2\u1ED4\u1ED6\u1ED8\u1EDA\u1EDC\u1EDE\u1EE0\u1EE2\u1EE4\u1EE6\u1EE8\u1EEA\u1EEC\u1EEE\u1EF0\u1EF2\u1EF4\u1EF6\u1EF8\u1EFA\u1EFC\u1EFE\u1F08-\u1F0F\u1F18-\u1F1D\u1F28-\u1F2F\u1F38-\u1F3F\u1F48-\u1F4D\u1F59\u1F5B\u1F5D\u1F5F\u1F68-\u1F6F\u1FB8-\u1FBB\u1FC8-\u1FCB\u1FD8-\u1FDB\u1FE8-\u1FEC\u1FF8-\u1FFB\u2102\u2107\u210B-\u210D\u2110-\u2112\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u2130-\u2133\u213E-\u213F\u2145\u2183\u2C00-\u2C2E\u2C60\u2C62-\u2C64\u2C67\u2C69\u2C6B\u2C6D-\u2C70\u2C72\u2C75\u2C7E-\u2C80\u2C82\u2C84\u2C86\u2C88\u2C8A\u2C8C\u2C8E\u2C90\u2C92\u2C94\u2C96\u2C98\u2C9A\u2C9C\u2C9E\u2CA0\u2CA2\u2CA4\u2CA6\u2CA8\u2CAA\u2CAC\u2CAE\u2CB0\u2CB2\u2CB4\u2CB6\u2CB8\u2CBA\u2CBC\u2CBE\u2CC0\u2CC2\u2CC4\u2CC6\u2CC8\u2CCA\u2CCC\u2CCE\u2CD0\u2CD2\u2CD4\u2CD6\u2CD8\u2CDA\u2CDC\u2CDE\u2CE0\u2CE2\u2CEB\u2CED\u2CF2\uA640\uA642\uA644\uA646\uA648\uA64A\uA64C\uA64E\uA650\uA652\uA654\uA656\uA658\uA65A\uA65C\uA65E\uA660\uA662\uA664\uA666\uA668\uA66A\uA66C\uA680\uA682\uA684\uA686\uA688\uA68A\uA68C\uA68E\uA690\uA692\uA694\uA696\uA698\uA69A\uA722\uA724\uA726\uA728\uA72A\uA72C\uA72E\uA732\uA734\uA736\uA738\uA73A\uA73C\uA73E\uA740\uA742\uA744\uA746\uA748\uA74A\uA74C\uA74E\uA750\uA752\uA754\uA756\uA758\uA75A\uA75C\uA75E\uA760\uA762\uA764\uA766\uA768\uA76A\uA76C\uA76E\uA779\uA77B\uA77D-\uA77E\uA780\uA782\uA784\uA786\uA78B\uA78D\uA790\uA792\uA796\uA798\uA79A\uA79C\uA79E\uA7A0\uA7A2\uA7A4\uA7A6\uA7A8\uA7AA-\uA7AE\uA7B0-\uA7B4\uA7B6\uA7B8\uFF21-\uFF3A]
 
 // Number, Letter
-Nl = [\u16EE-\u16F0\u2160-\u2182\u2185-\u2188\u3007\u3021-\u3029\u3038-\u303A\uA6E6-\uA6EF]
\ No newline at end of file
+Nl = [\u16EE-\u16F0\u2160-\u2182\u2185-\u2188\u3007\u3021-\u3029\u3038-\u303A\uA6E6-\uA6EF]
diff --git a/packages/mini/mini.mjs b/packages/mini/mini.mjs
index 5272a094d..44a99ccca 100644
--- a/packages/mini/mini.mjs
+++ b/packages/mini/mini.mjs
@@ -107,6 +107,9 @@ export function patternifyAST(ast, code, onEnter, offset = 0) {
       if (alignment === 'rand') {
         return strudel.chooseInWith(strudel.rand.early(randOffset * ast.arguments_.seed).segment(1), children);
       }
+      if (alignment === 'feet') {
+        return strudel.fastcat(...children);
+      }
       const weightedChildren = ast.source_.some((child) => !!child.options_?.weight);
       if (weightedChildren) {
         const weightSum = ast.source_.reduce((sum, child) => sum + (child.options_?.weight || 1), 0);
diff --git a/packages/mini/test/mini.test.mjs b/packages/mini/test/mini.test.mjs
index 6d9ac3671..afff85a91 100644
--- a/packages/mini/test/mini.test.mjs
+++ b/packages/mini/test/mini.test.mjs
@@ -73,6 +73,10 @@ describe('mini', () => {
     expect(minS('a!3 b')).toEqual(['a: 0 - 1/4', 'a: 1/4 - 1/2', 'a: 1/2 - 3/4', 'b: 3/4 - 1']);
     expect(minS('[<a b c>]!3 d')).toEqual(minS('<a b c> <a b c> <a b c> d'));
   });
+  it('supports replication via repeated !', () => {
+    expect(minS('a ! ! b')).toEqual(['a: 0 - 1/4', 'a: 1/4 - 1/2', 'a: 1/2 - 3/4', 'b: 3/4 - 1']);
+    expect(minS('[<a b c>]!! d')).toEqual(minS('<a b c> <a b c> <a b c> d'));
+  });
   it('supports euclidean rhythms', () => {
     expect(minS('a(3, 8)')).toEqual(['a: 0 - 1/8', 'a: 3/8 - 1/2', 'a: 3/4 - 7/8']);
   });
@@ -190,6 +194,16 @@ describe('mini', () => {
   it('supports patterned ranges', () => {
     expect(minS('[<0 1> .. <2 4>]*2')).toEqual(minS('[0 1 2] [1 2 3 4]'));
   });
+  it('supports the . operator', () => {
+    expect(minS('a . b c')).toEqual(minS('a [b c]'));
+    expect(minS('a . b c . [d e f . g h]')).toEqual(minS('a [b c] [[d e f] [g h]]'));
+  });
+  it('supports the _ operator', () => {
+    expect(minS('a _ b _ _')).toEqual(minS('a@2 b@3'));
+  });
+  it('_ and @ are almost interchangeable', () => {
+    expect(minS('a @ b @ @')).toEqual(minS('a _2 b _3'));
+  });
 });
 
 describe('getLeafLocation', () => {