Once dirhtml is set up to build file(s) satisfactorily, press F7 or click the 'Save Batch File' button on Input/Output page. Dirhtml will create a batch file linked to an .init file that incorporates all current settings. This makes it possible for the file(s) to be rebuilt by executing a batch file, which is convenient if files are rebuilt repeatedly or many files are built simultaneously.
Any dirhtml .ini file can be opened by pressing F8, edited, and saved with F9.
If the root folder (read from the .ini file) is ".", the current directory will be used as the root folder. In theory, this makes it possible to call dirhtml directly via a web language (perl/python/etc.) with an appropriate .ini file argument, wait for the file to be generated, then display it.
If desired, the generated root file can be automatically launched after being built by selecting the Auto-launch checkbox on the Input/Output page.