DVD-Lab Pro offers several methods to enter the virtual command. You can type in the command as following: GPRM2 = 2, LinkTailPGC (button 0), or if you know the hexadecimal codes of the commands, simply type them in the "Reverse VM Code" field.

We can also use the DVD VM Command Generator, provided with this guide to generate the required hexadecimal codes quickly. Then we perform a copy-and-paste operation to enter the hex codes into the Reverse VM Code.

The "Title Menu" is also stored as a standard Program Chain (PGC). Therefore, a title menu or any VTS menu can also have a pre-command and a post-command section. The virtual command GPRM2 = 2, LinkTailPGC (button 0) means that the GPRM2 is set to 2 and the post-command section of the title menu is executed next without any button highlighting. The ebook publication Unofficial DVD Specifications 2.2 offers detailed explanations of these virtual commands.

We enter the virtual commands for the post-command section of the title menu as following. This command simply links to the VTS root menu ("1-Root"). Another simpler way to link to the VTS root menu is dragging the button icon of the title menu and dropping the connection into the VTS root menu. DVD-Lab Pro will dynamically generate the same virtual command in the post-command section.

Order today your DVD-Lab Pro Authoring guides with professionally prepared NTSC/PAL video samples, Digital Dolby AC-3 audio samples, menu backgrounds and buttons, and get a copy of the DVD virtual command generator, absolutely free. You can get immediate help with your authoring project by clicking on the following icon.