All the following are run-time functions:
| Name | Description |
|---|---|
| CHANGEDIRQQ | CHANGEDIRQQ(dir). Makes the specified directory the current (default) directory. |
| CHANGEDRIVEQQ | CHANGEDRIVEQQ(drive). Makes the specified drive the current drive. |
| DELDIRQQ | DELDIRQQ(dir). Deletes a specified directory. |
| GETDRIVEDIRQQ | GETDRIVEDIRQQ(drivedir). Returns the current drive and directory path. |
| GETDRIVESIZEQQ | GETDRIVESIZEQQ(drive, total, avail). Gets the size of the specified drive. |
| GETDRIVESQQ | GETDRIVESQQ( ). Reports the drives available to the system. |
| GETENVQQ | GETENVQQ(varname, value). Gets a value from the current environment. |
| MAKEDIRQQ | MAKEDIRQQ(dirname). Makes a directory with the specified directory name. |
| RUNQQ | RUNQQ(filename, commandline). Calls another program and waits for it to execute |
| SETENVQQ | SETENVQQ(varvalue). Adds a new environment variable, or sets the value of an existing one. |
| SYSTEMQQ | SYSTEMQQ(commandline). Executes a command by passing a command string to the operating system's command interpretor. |