diff --git a/src/diagram.typ b/src/diagram.typ
index 1078454..c2c2656 100644
--- a/src/diagram.typ
+++ b/src/diagram.typ
@@ -9,6 +9,15 @@
   ),)
 }
 
+#let _evt(participant, event) = {
+  return ((
+    type: "evt",
+    participant: participant,
+    event: event,
+    lifeline-style: auto
+  ),)
+}
+
 #let diagram(elements) = {
   if elements == none {
     return
diff --git a/src/lib.typ b/src/lib.typ
index eb85b65..8574fbd 100644
--- a/src/lib.typ
+++ b/src/lib.typ
@@ -1,4 +1,4 @@
-#import "diagram.typ": diagram, from-plantuml, _gap
+#import "diagram.typ": diagram, from-plantuml, _gap, _evt
 
 #import "sequence.typ": _seq
 #import "group.typ": _grp
diff --git a/src/renderer.typ b/src/renderer.typ
index e3a3f78..b4d6605 100644
--- a/src/renderer.typ
+++ b/src/renderer.typ
@@ -49,6 +49,18 @@
         p.max-lifelines = calc.max(p.max-lifelines, p.lifeline-lvl)
         participants.at(i2) = p
       }
+    } else if elmt.type == "evt" {
+      let par-name = elmt.participant
+      let i = pars-i.at(par-name)
+      let par = participants.at(i)
+      if elmt.event == "disable" or elmt.event == "destroy" {
+        par.lifeline-lvl -= 1
+      
+      } else if elmt.event == "enable" {
+        par.lifeline-lvl += 1
+        par.max-lifelines = calc.max(par.max-lifelines, par.lifeline-lvl)
+      }
+      participants.at(i) = par
     }
   }
 
@@ -173,6 +185,29 @@
     // Gap
     } else if elmt.type == "gap" {
       y -= elmt.size
+    
+    // Event
+    } else if elmt.type == "evt" {
+      let par-name = elmt.participant
+      let i = pars-i.at(par-name)
+      let par = participants.at(i)
+      let line = lifelines.at(i)
+      if elmt.event == "disable" {
+        line.level -= 1
+        line.lines.push(("disable", y))
+      
+      } else if elmt.event == "destroy" {
+        line.lines.push(("destroy", y))
+      
+      } else if elmt.event == "enable" {
+        line.level += 1
+        line.lines.push(("enable", y, elmt.lifeline-style))
+      
+      } else if elmt.event == "create" {
+        shapes += participant.render(x-pos, par, y: y)
+        line.lines.push(("create", y))
+      }
+      lifelines.at(i) = line
     }
   }