TEMP: use case examples [skip ci]

cylc-src/set/ex1/flow.cylc

@@ -0,0 +1,33 @@
+# "cylc reset" should set required outputs just like natural completion:
+# - spawn children
+# - trigger event handlers
+# - complete an incomplete task
+
+[scheduling]
+    [[graph]]
+        R1 = """
+            foo-reset  # test default reset
+            foo => foo-post
+
+            bar? => bar-post
+            bar:fail? => bar-reset  # test explicit reset
+        """
+
+[runtime]
+    [[foo, bar]]
+        script = false
+        [[[events]]]
+            succeeded handlers = "echo !!!! SUCCEEDED !!!!"
+
+    [[foo-reset]]
+        script = """
+            cylc__job__poll_grep_workflow_log -E "1/foo .*failed"
+            cylc reset "${CYLC_WORKFLOW_ID}//1/foo"
+        """
+
+    [[bar-reset]]
+        script = """
+            cylc reset --out=succeeded "${CYLC_WORKFLOW_ID}//1/bar"
+        """
+    [[foo-post, bar-post]]
+        script = true

cylc-src/set/ex2/flow.cylc

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+[scheduling]
+    [[graph]]
+        R1 = """
+            long
+            a => b => c
+            a_cold => a
+            b_cold => b
+            c_cold => c
+        """
+
+[runtime]
+    [[long]]
+        script = sleep 600
+
+    [[a, b, c, a_cold, b_cold, c_cold]]
+        script = true

cylc-src/set/ex4/flow.cylc

@@ -0,0 +1,9 @@
+[scheduling]
+    [[graph]]
+        R1 = """
+            long  # kill me
+        """
+
+[runtime]
+    [[long]]
+        script = sleep 600