Are my interpretations right? :
chain: all the Call and Put strikes of an expiration date
multi-leg: a strategy consisting of at least 2 strikes
vertical: in a multi-leg strategy, when one of Call or Put of same chain used
horizontal: in a multi-leg strategy, when one of Call or Put of at least 2 chains used
iron: in a multi-leg strategy, when Call AND Put used
chain: all the Call and Put strikes of an expiration date
multi-leg: a strategy consisting of at least 2 strikes
vertical: in a multi-leg strategy, when one of Call or Put of same chain used
horizontal: in a multi-leg strategy, when one of Call or Put of at least 2 chains used
iron: in a multi-leg strategy, when Call AND Put used
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