The structore holding the html-ized article is as follows:
One sub-directory by default.
Consider directory listing. "ls" returns 1000 files soon, but 10000 files a little slowly.
To accelerate listing, we should use sub-directory structure. For example, each sub-directory holds 1000 files. The structure such as "spool/sub/file" holds 10^6 ( million ) files and listing of it is fast.
It must be enough to assume that 1 million articles for one ML.
Copyright (C) 1993-2018 Ken'ichi Fukamachi mail:< fukachan at fml.org >