Create a new web data directory under twiki/data and check the file permission of the directory.
Changed:
< <
Use a name consisting of characters A..Z , a..z but not in WikiNotation.
> >
Use a name starting with characters A..Z, followed by a..z and/or 0..9 characters, but not a WikiWord.
Copy all files from the twiki/data/_default directory to the new data directory, preserving the original files' owner, group and permissions (on Unix, use cp -p). The data files must be writable by the owner the CGI scripts are running on (usually, nobody).
HINT: You can set permissions of .txt and .txt,v files to -rw-rw-rw- (666) and then edit the topic using your browser; RCS will restore the file permissions correctly when saving the topic.
Add the new web to the web list (visible in the upper right corner of each topic) by editing the site-level preferences, TWikiPreferences: