Some UTF file encodings have a special "BOM" sequence of characters (Byte Order Mark).
Example when viewing an UTF-8 with BOM file within an ISO-8859-1 editor:
When reading such files, these first characters may be considered as part of the data.
In order to ignore them, a simple trick in Stambia is to add a transformation script to the File metadata, such as:
/* return data only after third character */