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I/O Format Division IB compiler error messages .IF directive IF statement .IFDEF directive .IFNDEF directive (Ignore Windows) mnemonic IHEXDEC function INCLUDE directive Include files Indentation Indexed Sequential files (Init Input Data) mnemonic Initialization statement Initiating terminal INPUTFILE statement INPUT statement INPUT statement (without Transmit Marks) INQUIRE statement (Insert Off) mnemonic (Insert On) mnemonic INSERT statement		INT function Integer portion INTEL function INTELD function Inter-partition communications Interactive Mode (compiler) Internet Basic Internet Basic Applications Internet Basic statements Internet Basic: Reference Guide Internet date format InternetBasic Electronic Mail InternetBasic exception messages InternetBasic file system InternetBasic help system (NOVA) InternetBasic Startup Options InternetBasic windows INTERRUPT statement Interrupting another partition Introduction to Internet Basic (Invoke HELP) mnemonic IS parameter (in SELECT structure) ITERM$ system variable