Return value#

Type Meaning
unknown The return contract has not been established. Unused return values do not prove void or nil.

Types and methods

Parameters#

Name Type / role
screen string: routing namespace matching screen in MD
control string: operation matching control in MD
payload supported payload value; the contract used here reads it as event.param3

Example and context#

See language basics, types and methods and Lua / MD events. Examples there are independent learning examples. No project source files or private implementation fragments are distributed with this reference.