- IAC
- INFO_SIZE
- IS_EMPTY
- IS_EMPTY_PTR
- InFolder
- IndexByName
- Init
- InitDefault
- InitViews
- InsertUTF8
- Insert_MainStyle_Check
- Int32
- Invoke
- InvokeMenu
- Invoke_ColorsSetup
- Invoke_FlagsSetup
- IsDataTrack
- IsDeviceOpened
- IsEmpty
- IsExisting
- IsLineVar
- IsStorageKit
- IsVirtualRoot
- IsVolumeReadOnly
- ItemAt
- ItemByTitle