wait until the mouse is down
A string
consisting of the text "down"
(without quotes).
The down
constant is a rare example of HyperTalk defining something other than a command or function that XION does not. It was decided that since left
and right
cannot be defined as constants alongside up
and down
(as they conflict with the left
and right
functions), then up
and down
should not be defined as constants either. Furthermore, the up
and down
constants are used in an environment-specific context for describing the state of mouse buttons and keyboard keys, which does not apply to XION.