Cross Reference: /external/eclipse-windowbuilder/propertysheet/src/org/eclipse/wb/internal/core/icons/properties

`Name`	`Date`	`Size`
Up to higher level directory
`BooleanNull.png`	08-Oct-2015	`213`
`BooleanUnknown.png`	08-Oct-2015	`362`
`dots.gif`	08-Oct-2015	`825`
`down.png`	08-Oct-2015	`141`
`false.png`	08-Oct-2015	`155`
`minus.gif`	08-Oct-2015	`872`
`plus.gif`	08-Oct-2015	`873`
`true.png`	08-Oct-2015	`214`