Contract| Parameter key | Default value | Type | | aliases | <vector "html"/> | vector | | id | opt | | class | opt | | lang | opt | | lang | opt | | dir | "ltr" | type.<one_of "ltr" "rtl"/> | | onclick | opt | | ondblclick | opt | | onmousedown | opt | | onmouseup | opt | | onmouseover | opt | | onmousemove | opt | | onmouseout | opt | | onkeypress | opt | | onkeydown | opt | | onkeyup | opt | | accesskey | opt | | tabindex | opt | integer | | onfocus | opt | | onblur | opt | | Parameter kind | Default value | Type | | Other unkeyed arguments | opt with ekind of mixed | wob | | Water Contract<class p
_other_unkeyed=opt=wob=ekind.mixed="_add_to_environment"
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