| DBSTRUCT() | Create an array containing the structure of a database file |
| DBUNLOCK() | Release all locks for the current work area |
| DBUNLOCKALL() | Release all locks for all work areas |
| DBUSEAREA() | Use a database file in a work area |
| DEFPATH() | Returns the true path defined in SET DEFAULT command. |
| DELETED() | Return the deleted status of the current record |
| DESCEND() | Create a descending index key value |
| DEVOUT() | Write a value to the current device |
| DEVOUTPICT() | Write a value to the current device using a picture clause |
| DEVPOS() | Move the cursor or printhead to a new position depending on the current |
| DIRCHANGE() | Change the current DOS directory |
| DIRECTORY() | Create an array of directory and file information |
| DIRMAKE() | Create a directory |
| DIRREMOVE() | Remove a directory |
| DISKCHANGE() | Change the current DOS disk drive |
| DISKNAME() | Return the current DOS drive |
| DISKSPACE() | Return the space available on a specified disk |
| DISPBEGIN() | Begin buffering screen output |
| DISPBOX() | Display a box on the screen |
| DISPCOUNT() | Return the number of pending DISPEND() requests |
| DISPEND() | Display buffered screen updates |
| DISPOUT() | Write a value to the display |
| DOSERROR() | Return the last DOS error number |
| DOSPATH() | Returns file name as DOS file name. |
| DOW() | Convert a date value to a numeric day of the week |
| DSTRTON() | Convert string as "double" to xClipper-numeric. |
| DTOC() | Convert a date value to a character string |
| DTOS() | Convert a date value to a character string formatted as yyyymmdd |
| EMPTY() | Determine if the result of an expression is empty |
| EOF() | Determine when end of file is encountered |
| ERRORBLOCK() | Post a code block to execute when a runtime error occurs |
| ERRORLEVEL() | Set the xClipper return code |
| EVAL() | Evaluate a code block |
| EVP_ALG_LIST() | Returns list of algoritms, registered in used version of OpenSSL library. |
| EVP_DECRYPT() | Decrypt string encrypted by ENV_ENCRYPT(). |
| EVP_ENCRYPT() | Encrypt string using one of symmetric block algoritm and given key string. |
| EXP() | Calculate e**x |
| FACCESS() | Check access to file. |
| FCGI_ACCEPT() | Accept FCGI connecton from server peer. |
| FCGI_FLUSH() | Flush all buffered data to FCGI server peer. |
| FCGI_GETENV() | Return value of environment variable, or map all variables as name/value pairs. |
| FCGI_READ() | Read output of WWW server, passed via FCGI protocol. |
| FCLOSE() | Close an open binary file and write DOS buffers to disk |
| FCOUNT() | Return the number of fields in the current .dbf file |
| FCREATE() | Create and/or truncate a binary file to zero-length |
| FERASE() | Delete a file from disk |
| FERROR() | Test for errors after a binary file operation |
| FERRORSTR() | Under construction |
| FIELDBLOCK() | Return a set-get code block for a given field |
| FIELDGET() | Retrieve the value of a field using the ordinal position of the field in the |