There is no such possibility now. But it's a easy to do it by edititng project file.
If you look into project file, the structure of files is simple Under [Project tree] section is tree of files and folders level = real tab first level is name of the project - mandatory folder begins with "+" or "-" sign (expanded/collapsed) You can simple open all PPR files (rename extension to TXT) or in PSPad go to Open - don't dblclick it to prevent open it as project. Copy content of the [Project tree] section without the first level and copy it to end of [project tree section]. You can add folder for each project (increase level of one tab) -- <https://forum.pspad.com/read.php?2,74175,74177> PSPad freeware editor https://www.pspad.com
