How create a directory with full permiss for everybody

[brouwers roland lx]

Hello,

I would like to create a directory with full permissions for everybody.
So I search google and:
create a user tdp 
create a group tdpgr
create directory /home/tdpgr
assigned all users to that group
chown -R tdp:tdpgr /home/tdpgr
chmod -R 2775 /home/tdpgr

When a doc is created from any user it will get the permission -rwxrwxr-
x
When some user opens the doc it is opened as read-only
Why ??????


Roland Brouwers
C.A.T. bvba
Antwerp-Belgium
roland at cat.be