On an RM CC3 network, the writeaccess.ini file controls file and registry permissions for an assigned package.  The writeaccess.ini file is applied by Group Policy Objects.

Sample

; File System
[C:\Program Files\SIMS]
everyone=0x1F01FF

; Windows Registry HKLM=HKey_Local_Machine HKCU=HKey_Current_User
[HKLM\SOFTWARE\Classes\EclipseControls.BarcodeReader]
Everyone=0x3003F

One of the things that are not mentioned are the permissions,  the following sets of permissions are available.

File System
Full Control: 0x1F01FF
Read-write (but not delete): 0x1201BF
Modify (read, write, delete): 0x1301BF
Read Only: 0x1200A9

Registry
Full Control: 0xF003F
Modify (read, write, delete): 0x3003F
Read Only: 0x20019