I'm asking for a friend who's English is even
more worse than mine.
That must be very bad English! :-)
1. Is every revision saved? Meaning: if I change a
slash into a
backslash in a text of 12 kB is the space needed changing to 24 KB?
And if I change a "then" to a "than" ist it changing to 36 kB than?
Usually yes, you have multiple versions of text stored separately.
There is, however, batch compression script, that can either calculate deltas,
concatenate, compress and write a blob, or just simply concatenate/compress and write a
On articles with large edit histories this can compress to 1% :)
2. If I delete an article as an administrator, is it
really wiped off the disk?