envSetVarCurrValToDefault

envSetVarCurrValToDefault(
t_tool[.Partition]
t_varName
)
=> t / nil

Sets the current value of the environment variable you specify to the default value.

t_tool[.Partition]
	The name of the tool and the partition (if any). A partition is a way of grouping related sets of variables associated with a tool.
t_varName	The name of the environment variable.

`t`	The variables were reset.
`nil`	The variables could not be reset.