SQL Developer user information directory: SystemV.W.X.Y.Z/o.sqldeveloper/ide.properties

ide.properties stores settings related to the IDE of Oracle SQL Developer.

Properties that relate to File -> Reopen menu include:

`Ide.DefaultReopenHistoryCount`	maximum number of items in each group of File -> Reopen
`OpenedFilesHistoryCount`	The number of items that are currently displayed in this menu
`OpenedFilesHistoryItem0`	Item that can be reopened (`n` = `0` … OpenedWorkspacesHistoryCount` -1)

Properties that relate to File -> Menu