| CODB_EXECUTE | Execute query. |
| CODB_GET_ANSWER | Check if answer of query is error. |
| CODB_GET_COLUMN | Get result column name by its index. |
| CODB_GET_ERROR | Get error description. |
| CODB_GET_METAOBJECT | Get metaobject content by ID. |
| CODB_GET_OBJECT | Get object content by ID. |
| CODB_GET_RESULT | Get query result as array. |
| CODB_NUM_COLUMNS | Get number of columns in query result. |
| CODB_NUM_ROWS | Get number of rows in query result. |
| CODB_PUT_METAOBJECT | Put metaobject in database. |
| CODB_PUT_OBJECT | Put object in database. |
| COL() | Return the screen cursor column position |
| COLORSELECT() | Activate attribute in current color settings |
| COM_COUNT() | Counts the number of characters in the input buffer. |
| COM_DTR() | Queries/sets the Data Terminal Ready (DTR) status. |
| COM_FLUSH() | Clears the receiving buffer. |
| COM_HARD() | Turns the hardware handshake (automatic CTS) on/off. |
| COM_INIT() | Initializes the port parameters. |
| COM_NUM() | Return the number of the highest available serial interface port |
| COM_OPEN() | Opens the port and initializes the buffer |
| COMPILEFILE() | Compile file. |
| COMPILESTRING() | Compile string. |
| COM_READ() | Reads characters from the receiving buffer. |
| COM_RTS() | Queries/sets the RTS status. |
| COM_SEND() | Transmits data. |
| COM_SFLUSH() | Flush sending buffer. |
| COM_SOFT() | Queries or sets the software handshake (automatic XON/XOFF). |
| COM_TIMEOUT() | Set timeout for all operations in 1/10 seconds. |
| CSCOUNT() | Returns the number specified chars into source string. |
| CTOD() | Convert a date string to a date value |
| CURDIR() | Return the current DOS directory |
| DATE() | Return the system date as a date value |
| DAY() | Return the day of the month as a numeric value |
| DBAPPEND() | Append a new record to the database open in the current work area |
| DBCLEARFILTER() | Clear a filter condition |
| DBCLEARINDEX() | Close all indexes for the current work area |
| DBCLEARRELATION() | Clear active relations |
| DBCLOSEALL() | Close all occupied work areas |
| DBCLOSEAREA() | Close a work area |
| DBCOMMIT() | Flush pending updates |
| DBCOMMITALL() | Flush pending updates in all work areas |
| DBCREATE() | Create a database file from a database structure array |
| DBCREATEINDEX() | Create an index file |
| DBDELETE() | Mark a record for deletion |
| DBEDIT() | Browse records in a table layout |
| DBEVAL() | Evaluate a code block for each record matching a scope and condition |
| DBF() | Return current alias name |
| DBFILTER() | Return the current filter expression as a character string |
| DBGOBOTTOM() | Move to the last logical record |
| DBGOTO() | Position record pointer to a specific identity |