Specific questions are more likely to get useful answers than are general ones. Spammers will be reported to their ISPs. Not everyone can handle those relatively large files and binaries in non- binary groups have been known to get those newsgroups removed from some ISP's. Instead put them on a web page or post them to an alt.binaries . Do not post in HTML or any other format that uses styles.
Some news- readers can only handle plain text.
The language of the hmcw newsgroup is English. Posting in other languages is discouraged. Many of the postings to the hmcw group will contain quotes in German and will occasionally quote in other European languages. Keep line lengths to less than 80 columns. 72 is suggested, to allow for indentation of quoted text in replies.