| Type |  | Name |  | Summary | 
|  | 
| Compiler Directive |  | $L |  | Determines what application debug information is built | 
| Compiler Directive |  | $LocalSymbols |  | Determines what application debug information is built | 
| Compiler Directive |  | $LongStrings |  | Treat string types as AnsiString or ShortString | 
| Function |  | LastDelimiter |  | Find the last position of selected characters in a string | 
| Function |  | Length |  | Return the number of elements in an array or string | 
| Function |  | Ln |  | Gives the natural logarithm of a number | 
| Function |  | Lo |  | Returns the low-order byte of a (2 byte) Integer | 
| Function |  | Log10 |  | Gives the log to base 10 of a number | 
| Variable |  | LongDateFormat |  | Long version of the date to string format | 
| Variable |  | LongDayNames |  | An array of days of the week names, starting 1 = Sunday | 
| Type |  | LongInt |  | An Integer whose size is guaranteed to be 32 bits | 
| Variable |  | LongMonthNames |  | An array of days of the month names, starting 1 = January | 
| Variable |  | LongTimeFormat |  | Long version of the time to string format | 
| Type |  | LongWord |  | A 32 bit unsigned integer | 
| Function |  | Low |  | Returns the lowest value of a type or variable | 
| Function |  | LowerCase |  | Change upper case characters in a string to lower case | 
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