Reference Topics > Setting default file name suffixes
  
Setting default file name suffixes
When you save a file, Creo Elements/Direct Modeling appends a default file name extension. For example:
.env
for environment files
.ses
for session files
.pkg
for package files
.sdp
for part instance files
.sda
for assembly instance files
.sdpc
for part contents files
.sdac
for assembly contents files
.sdc
for container instance files
.sdcc
for container contents files
This helps to quickly distinguish the different file types.
You can change the default file name suffix by editing your environment file.