| Type |  | Name |  | Summary | 
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| Function |  | FahrenheitToCelsius |  | Convert a fahrenheit temperature into celsius | 
| Keyword |  | File |  | Defines a typed or untyped file | 
| Function |  | FileAge |  | Get the last modified date/time of a file without opening it | 
| Function |  | FileDateToDateTime |  | Converts a file date/time format to a TDateTime value | 
| Function |  | FileExists |  | Returns true if the given file exists | 
| Function |  | FileGetAttr |  | Gets the attributes of a file | 
| Variable |  | FileMode |  | Defines how Reset opens a binary file | 
| Function |  | FilePos |  | Gives the file position in a binary or text file | 
| Function |  | FileSearch |  | Search for a file in one or more directories | 
| Function |  | FileSetAttr |  | Sets the attributes of a file | 
| Function |  | FileSetDate |  | Set the last modified date and time of a file | 
| Function |  | FileSize |  | Gives the size in records of an open file | 
| Procedure |  | FillChar |  | Fills out a section of storage with a fill character or byte value | 
| Keyword |  | Finally |  | Starts the unconditional code section of a Try statement | 
| Function |  | FindClose |  | Closes a successful FindFirst file search | 
| Function |  | FindCmdLineSwitch |  | Determine whether a certain parameter switch was passed | 
| Function |  | FindFirst |  | Finds all files matching a file mask and attributes | 
| Function |  | FindNext |  | Find the next file after a successful FindFirst | 
| Function |  | FloatToStr |  | Convert a floating point value to a string | 
| Function |  | FloatToStrF |  | Convert a floating point value to a string with formatting | 
| Procedure |  | Flush |  | Flushes buffered text file data to the file | 
| Keyword |  | For |  | Starts a loop that executes a finite number of times | 
| Function |  | ForceDirectories |  | Create a new path of directories | 
| Function |  | Format |  | Rich formatting of numbers and text into a string | 
| Function |  | FormatCurr |  | Rich formatting of a currency value into a string | 
| Function |  | FormatDateTime |  | Rich formatting of a TDateTime variable into a string | 
| Function |  | FormatFloat |  | Rich formatting of a floating point number into a string | 
| Function |  | Frac |  | The fractional part of a floating point number | 
| Procedure |  | FreeAndNil |  | Free memory for an object and set it to nil | 
| Procedure |  | FreeMem |  | Free memory storage used by a variable | 
| Keyword |  | Function |  | Defines a subroutine that returns a value | 
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