Because these files are encoded in a specific binary format, you cannot edit them with a standard text editor. You must use a dedicated utility. Recommended Editors OPL Manager

: For managing the "Apps" menu in OPL, you may need to edit conf_apps.cfg or title.cfg instead, which are standard text-based configuration files. PS2 - OPL CFG Editor | PSX-Place

For the average user, this file looks like gibberish—a binary blob of data that your console needs but your computer cannot read. This is where a becomes essential. Without it, managing large libraries of games can become a nightmare of duplicate entries, missing titles, and corrupted lists.

You need a —software written specifically to parse this binary structure and present it in a human-readable, editable table.