| Code | Description |
|---|---|
| A | Algebraic function: evaluate expressions. |
| AE | Algebraic function: evaluate extended expressions. |
| C | Concatenate elements. |
| CALL | Call an Embedded Basic subroutine. |
| D | Date - convert date. |
| D1 | Define controlling attribute linked to one or more dependent attributes (only used within attribute 8 conversions). |
| D2 | Define dependent attribute (only used within attribute 8 conversions). |
| F | Function - manipulate expressions based on a reverse Polish notation. |
| FE | Function - manipulate extended expressions using standard reverse Polish notation. |
| FS | Function - manipulate expression based on the standard reverse Polish notation. |
| G | Group - select one or more contiguous elements from an attribute value. |
| L | Length - returns length of value, or value itself if within specified length. |
| MC | Mask Character - extract and convert characters. |
| MD | Mask Decimal - convert and scale numbers. |
| MK | Mask Metric - display approximate value. |
| ML | Mask decimal Left aligned – convert and scale decimals left aligned. |
| MP | Mask Packed - convert packed decimals. |
| MR | Mask decimal Right aligned - convert and scale decimals right aligned. |
| MT | Mask Time - convert time. |
| P | Pattern matching - returns values matching pattern (or null). |
| R | Range check - returns values within ranges(s) (or null). |
| S | Substitution - specifies substitution elements for values. |
| S | SOUNDEX - generates the phonetic equivalent of its input. |
| T | Text - extract a contiguous string of characters from a value. |
| Tfile | Translate file - translate values using a second file. |
| U | User exit - execute assembler-coded routine or process value. |
If keyword case-insensitivity is selected, these codes and their operators and operand keywords can be in any combination of upper or lower case. Otherwise, they must be in upper case.