# Decoder and Subject Lines

If no recognizable Info Headers are contained in the article body text of an encoded block, WinVN relies on the subject line content.

The WinVN decoder understands the following commonly used subject line styles:

filename.ext 1/2 comment

filename.ext (1/2) comment

filename.ext [1/2] comment

filename.ext 1 of 2 comment

filename.ext part 1 of 2 comment

For subject lines beginning with the comment or free text, the filename is harder to guess. In these cases, WinVN chooses an identifier which it will seek in other subject lines (it prefers a word containing a dot (hopefully filename.ext), but if none, it just uses the first word). For example:

This is part 1/2 of filename.ext (filename = "filename.ext")

Another encoded file: filename.ext (1/2) (filename = "filename.ext")

Testing encoded files (1/2) (filename = "testing")

This is not an infallible method but it works most of the time. Subject styles known to be incorrectly handled are:

filename.ext 3.4 (1/2) (filename w/ version number)

filename.ext 001 (sequence w/ no # parts)

filename.ext1 (part number appended to filename)