| Name | Description |
|---|
| IScreenBackground | Fill screen with a 'desktop' background pattern |
| IScreenBell | Enable/disable/ring the bell |
| IScreenBuffer | Enable/disable/flush screen output buffer |
| IScreenClose | Terminate INTERACTER screen handling |
| IScreenCode | Specify codes to select VT/Tek text/graphics modes |
| IScreenCopy | Copy a block of screen text into a character array |
| IScreenDump | Dump screen to a printer or print file |
| IScreenDumpOptions | Define screen dump options (page size, position, etc.) |
| IScreenGet | Save text screen in an internal buffer |
| IScreenLoadImage | Load a previously saved screen from disk |
| IScreenMode | Select screen mode by resolution & colours |
| IScreenModeN | Select screen mode by number |
| IScreenModeOptions | Specify screen mode selection options |
| IScreenOpen | Initialise INTERACTER screen handling |
| IScreenPaste | Paste a block of screen text from a character array |
| IScreenPut | Restore a text screen saved by IScreenGet |
| IScreenSaveImage | Save screen to disc |
| IScreenScroll | Scroll or clear a number of screen lines |
| IScreenTitle | Set text/graphics window titles in windowing environment |
| Name | Description |
|---|
| InfoAttribute | Return text attributes information |
| InfoCursor | Return current/saved cursor positions |
| InfoDeviceName | Return printer/plotter descriptions |
| InfoError | Return error information |
| InfoErrorMessage | Return error message string |
| InfoField | Return information about a specified form field |
| InfoFilename | Return default filenames |
| InfoForm | Return Forms Manager information |
| InfoFormMenu | Return option strings from specified form menu field |
| InfoFrame | Return text frame styles/options |
| InfoGraphics | Return real graphics mode information |
| InfoGrHardcopy | Return graphics facilities information (hardcopy) |
| InfoGrid | Return Grid Manager information |
| InfoGrPalette | Return graphics palette information |
| InfoGrScreen | Return graphics facilities information (screen) |
| InfoHardware | Return hardware information |
| InfoInput | Return keyboard input facilities information |
| InfoOpSystem | Return operating system related information |
| InfoPgInteger | Return presentation graphics information (integer) |
| InfoPgReal | Return presentation graphics information (real) |
| InfoPgStyle | Return presentation graphics information (styles) |
| InfoScreen | Return screen mode/dump information (current mode) |
| InfoScreenMode | Return screen mode information (any mode) |
| InfoVersion | Return library version number information |
| InfoWindow | Return window management system information |
| InfoWinString | Return character data associated with text window manager |
| Name | Description |
|---|
| IOsArgument | Return a command line argument |
| IOsCommand | Issue an o.s. command, clear screen & pause |
| IOsCommandSilent | Issue a silent operating system command |
| IOsCopyFile | Copy a file |
| IOsDate | Return system date |
| IOsDeleteFile | Delete file(s) |
| IOsDirChange | Change current directory |
| IOsDirCount | Count number of matching files in specified directory |
| IOsDirDelete | Delete named directory |
| IOsDirEntryType | Specify type of directory entries to be returned |
| IOsDirInfo | Return directory file name/date/time/size info |
| IOsDirList | List contents of a directory, with optional match string |
| IOsDirMake | Make a directory |
| IOsDirName | Return the name of the current directory |
| IOsExecute | Terminate current program & execute a new one |
| IOsExitProgram | Abort program with an error message & error code |
| IOsFileDate | Convert a file date/time value to year/month/day |
| IOsFileTime | Convert a file date/time value to hours/minutes/seconds |
| IOsRenameFile | Rename a file |
| IOsTime | Return system time |
| IOsVariable | Return the value of an operating system variable |
| IOsWait | Halt program execution for specified length of time |
| Name | Description |
|---|
| IActualLength | Return actual length of string excl. trailing blanks |
| IDoubleToString | Convert a double precision value to a string |
| IFillString | Fill a character string with a given character |
| IJustifyString | Justify a string within a character variable |
| ILocateChar | Locate position of first non blank character |
| ILocateString | Locate position of first non blank sub-string |
| ILowerCase | Convert a string to lower case |
| INextDouble | Extract/clear next substring & return as double prec. |
| INextInteger | Extract/clear next substring & return as integer |
| INextReal | Extract/clear next substring & return as real |
| INextString | Extract/clear next substring & return as string |
| IntegerToString | Convert an integer value to a string |
| IntValueOfChar | Return integer value of a numeric character |
| IRealToString | Convert a real value to a string |
| IStringToDouble | Convert a string to a double precision value |
| IStringToInteger | Convert a string to an integer value |
| IStringToReal | Convert a string to a real value |
| IUpperCase | Convert a string to upper case |
| Name | Description |
|---|
| IDoubleMax1 | Return maximum value of a 1 dimensional double prec array |
| IDoubleMax2 | Return maximum value of a 2 dimensional double prec array |
| IDoubleMaxMin1 | Return max & min of a 1 dimensional double prec array |
| IDoubleMaxMin2 | Return max & min of a 2 dimensional double prec array |
| IDoubleMin1 | Return minimum value of a 1 dimensional double prec array |
| IDoubleMin2 | Return minimum value of a 2 dimensional double prec array |
| IRealMax1 | Return maximum value of a 1 dimensional real array |
| IRealMax2 | Return maximum value of a 2 dimensional real array |
| IRealMaxCum2 | Return max cumulative row value of a 2 dimension real array |
| IRealMaxFunc1 | Return maximum value of a real function taking 1 arg |
| IRealMaxFunc2 | Return maximum value of a real function taking 2 args |
| IRealMaxMin1 | Return max & min of a 1 dimensional real array |
| IRealMaxMin2 | Return max & min of a 2 dimensional real array |
| IRealMaxMinFunc1 | Return max & min of a real function taking 1 arg |
| IRealMaxMinFunc2 | Return max & min of a real function taking 2 args |
| IRealMin1 | Return minimum value of a 1 dimensional real array |
| IRealMin2 | Return minimum value of a 2 dimensional real array |
| IRealMinFunc1 | Return minimum value of a real function taking 1 arg |
| IRealMinFunc2 | Return minimum value of a real function taking 2 args |
