Variable availability

You can only use certain JavaScript objects inside a specific context. In some contexts, certain objects are automatically instantiated.

Table 1. Object availability
Object	Context Allowed	Context Instantiated	Context Denied
`TWLogger`	All	None	None
`TW`	Process	Process	ScoreBoard
`TWScoreboard`	ScoreBoard	ScoreBoard	Process, Service
`Chart`	ScoreBoard	Filter Layout, Datasource	None
`TWDate`	All	None	None
`TWMap`	All	None	None
`String`	All	None	None
`XMLDocument`	All	None	None
`XMLElement`	All	None	None
`XMLNodelist`	All	None	None
`listOf`	All	None	None
`ic`	All	None	None
`Alert`	All	None	None
`Event`	All	None	None