Simple On/Off Switch with Exec-Command

@toaopeter this is explicitly stated in the tutorial!

You may have multiple rules in one rulefile, do not forget to change the name of the rule when copy pasting or multiple trigger in one rule.

rule "First Rule"
  when
    <TRIGGER CONDITION1>
  then
     // Do stuff
end

rule "Second Rule"
  when
    <TRIGGER CONDITION2>
  then
     // Do stuff
end
when
    <TRIGGER CONDITION1> or
    <TRIGGER_CONDITION2> or
    <TRIGGER_CONDITION3>
    ...
then

https://docs.openhab.org/configuration/rules-dsl.html