Hello There is a file size limit for autohighlight syntax. The limit is maybe set too low for current computer power.
Open program settings / Direct edit button Change value of the variable HLUpToSize e.g. to 500 000: HlUpToSize=500000 It means files to 500 kB size will be highlighted automatically. Please don't increase it above the about 1,2MB, it's integer value. -- <https://forum.pspad.com/read.php?2,74248,74249> PSPad freeware editor https://www.pspad.com
