Hi Pete,
If the file that is loaded in the EditControl is already indented, the EditControl will display the file as such.
Please refer to attached sample that illustrates the same.
http://websamples.syncfusion.com/samples/Edit/F67354/main.htmIf the file that is loaded is not already indented and if you want the EditControl to perform the formatting, you have to write a separate class that implements IAutoFormatter interface and use it in EditControl.
Please refer to the following link for more details:
http://www2.syncfusion.com/ug/Default.aspx##Essential%20Studio.chm/EditWindows/AutoFormatting.htmlKindly let me know if you need any further assistance.
Best regards,
Golda