The text to be displayed, e.g. as the text for filters in file dialogs. If the value starts with '%' the rest of the value is interpreted as a property key and the value gets looked-up in the
Bundle.properties file (or a locale specific derivation of this file), which has to be in the same package as the annotated data type.
The position, e.g. to order the file extensions in filters of file dialogs. It's a best practice to leave out some positions between entries to allow other bundles to register entries between
some existing ones.