updated manual with new group types

docs/examples.typ

@@ -63,6 +63,45 @@ _grp("Group 1", desc: "Description", {
 })
 ```)
 
+#let alt = example(```
+_par("a", display-name: "Alice")
+_par("b", display-name: "Bob")
+
+_alt(
+  "first encounter", {
+    _seq("a", "b", comment: "Who are you ?")
+    _seq("b", "a", comment: "I'm Bob")
+  },
+
+  "know eachother", {
+    _seq("a", "b", comment: "Hello Bob")
+    _seq("b", "a", comment: "Hello Alice")
+  },
+
+  "best friends", {
+    _seq("a", "b", comment: "Hi !")
+    _seq("b", "a", comment: "Hi !")
+  }
+)
+```)
+
+#let loop = example(```
+_par("a", display-name: "Alice")
+_par("b", display-name: "Bob")
+
+_loop("default loop", {
+  _seq("a", "b", comment: "Are you here ?")
+})
+_gap()
+_loop("min loop", min: 1, {
+  _seq("a", "b", comment: "Are you here ?")
+})
+_gap()
+_loop("min-max loop", min: 1, max: 5, {
+  _seq("a", "b", comment: "Are you still here ?")
+})
+```)
+
 #let sync = example(```
 _par("alice", display-name: "Alice")
 _par("bob", display-name: "Bob")