Hello I wrote you, that PSpad contains help. Press F1 to open help, in the index search for Command line and you will see all the possibilities.
If you want to open/select file and jump on line 13 use: "path\pspad.exe" "file" /13 -- <https://forum.pspad.com/read.php?2,78962,78967> PSPad freeware editor https://www.pspad.com