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### 8.169 `LEN_TRIM` — Length of a character entity without trailing blank characters

Description:
  Returns the length of a character string, ignoring any trailing blanks.
Standard:
  Fortran 90 and later, with KIND argument Fortran 2003 and later
Class:
  Elemental function
Syntax:
  `RESULT = LEN_TRIM(STRING [, KIND])`
Arguments:

  STRING | Shall be a scalar of type `CHARACTER`, with `INTENT(IN)`
  KIND | (Optional) An `INTEGER` initialization expression indicating the kind parameter of the result.

Return value:
  The return value is of type `INTEGER` and of kind KIND. If KIND is absent, the return value is of default integer kind.
See also:
  LEN, ADJUSTL, ADJUSTR