Hi Leo,
Thank you for your interest in our products
If your intension is to have plain text configuration in EditControl this can be achieved by creating a custom config file with any name without any lexeme definition in it.
Please have a look at the below sample without any syntax highlighting:
http://websamples.syncfusion.com/samples/Edit/F71507/main.htmKindly try this and let me know if you need further assistance.
Regards,
Jisha