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Example 2: flow nesting. When S0 is running for a while, S1 and S2 start to run; the running
status of S1 is kept. When S0 is running for certain time, closes S0 and force close S1 and S2.
M0
S0
STL S0
S0
SM000
T0
T0
T3
T4
STLE
STL S1
S1
T1
STLE
STL S2
S2
T2
STLE
S0
(
)
S
ZRST
S0
S1
M1
(
)
S
TMR T0 K50 K100
TMR T4 K1000 K100
ST
S1
TMR T3 K10 K100
ST
S2
S0
(
)
R
TMR T1 K200 K100
S1
(
)
R
TMR T2 K400 K100
S2
(
)
R
91
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