text: Title: If my exact string syntax is known, is there a way to pass it as a parameter to improve accuracy?
  Body: I need to extract a single numeric string per image.
  
  The strings are formatted.
  
  I know the exact syntax of the strings: `(-)###0.000_(-)###0.000_/_(-)##0.00_(-)##0.00_/_0.000`
  
  Where:
  
  1. `(-)` is absent when positive or a minus sign when negative.
  2. `#` is absent unless it is a number `1 through 9`
  3. `0` is any number `0 through 9` (`0` is never absent)
  4. `_` is a space and `/` is a forward slash.
  
  The string is on a single line and the x/y coordinates of its bounding box are known and constant.
  The character size and font are known and constant.
  
  Is it possible to inform the model of this syntax?
  If so, would there be any accuracy or performance advantage?