Yes Or No Settings
Some settings Sandboxie Ini are boolean settings. That is, they indicate whether something is or isn't; they answer a Yes/No question.
To indicate the setting is enabled (or selected, or yes), specify Y.
To indicate the setting is disabled (or unselected, or no), specify N.
A boolean setting which not specified, or specifies some other value other than Y or N will silently revert to a default value which depends on the particular setting. For example, the default value for the OpenProtectedStorage setting is N, while the default value for the BlockDrivers setting is Y.