The most general OCR special characters are supported by CSDK. The following list contains the description of filling methods containing these special characters. In addition the shapes of these characters are also listed. The codes retrieved by the OCR engines for these characters can be found on the page Characters and Code Pages.

• IG_REC_FM_DASHDIGIT
  Ten digits only and the period. Commas are also read, but converted to periods. Though this is in theory a fixed-font, many variants of it are used. This filling method is supported by MAT OCR engine.
• IG_REC_FM_DOTDIGIT
  Ten digits only and the period. Commas are also read, but converted to periods. Though this is in theory a fixed-font, many variants of it are used. This filling method is supported by MAT OCR engine.
• IG_REC_FM_MICR
  MICR (E-13B). Digits plus some punctuation and 4 special MICR symbols:

  OCR Branch Bank:
  OCR Amount of Check:
  OCR Dash:
  OCR Customer Account Number:

• This filling method is supported by MAT OCR engine.
• IG_REC_FM_OCRA
  OCR-A. Uppercase English letters (26), digits, some punctuation (see Characters (punctuation / miscellaneous) and modules) and 3 special OCR-A symbols:

  OCR Chair:
  OCR Hook:
  OCR Fork:

• This filling method is supported by MAT OCR engine.
• IG_REC_FM_OCRB
  OCR-B. Uppercase English letters (26), digits and some punctuation. This filling method is supported by MAT OCR engine.