Writing to a save file

Leif,
have you a program which writes to a save file.  I guess I should ask the
whole list. The compression on the 400 is impressive compacting the save
files, considerablely more than the compress save files does.  I take it
from a save file to a   physical file then compress it.  Decompress it, then
move to a save file.  Thought the compression is impressive, the time it
takes is a little long. So I was trying to go ftom a save file directly from
save file to compress file, back to save file.

By the way, why does the decompression take 1/3 the time as compression?

Harry