4.2 Command Procedures
  This section describes the command procedures used during
  login.

  DECW$LOGIN.COM
  The user DECW$LOGIN.COM procedure is normally exe-
  cuted during a DECwindows session manager startup.

  DECW$SYLOGIN.COM
  The system DECW$SYLOGIN.COM procedure is normally
  executed during a DECwindows session manager startup.

  ENTER.COM
  The user ENTER.COM procedure, which is searched for in
  [user-name.SFT] and then in SYS$LOGIN:, is executed by the
  USER command when the user moves from an application,
  group or home environment to their user environment.

  EXIT.COM
  The user EXIT.COM procedure, which is searched for in
  [user-name.SFT] and then in SYS$LOGIN:, is executed by
  the USER command when the user moves from their user
  environment to an application, group or home environment.

  HOME.COM
  The user HOME.COM procedure, which is searched for in
  [user-name.SFT] and then in SYS$LOGIN:, is executed by the
  HOME command when the user moves from an application,
  group or user environment back to their home environment.

  dw-appl-code _ENTER.COM
  A DECwindows enter procedure, which is searched for in
  [user-name.DECW] and then in SYS$LOGIN:, is used to per-
  form DECwindows application specific activities prior to the
  execution of a DECwindows application.

  For example the procedure [user.DECW]CMS_ENTER.COM
  might contain commands to define the CMS library to be
  related to the current default directory as passed from the
  session manager or FileView. DECwindows application codes
  include: Code Application CMS CMS DTM DTM WRITE
  DECwrite

  dw-appl-code _EXIT.COM
  A DECwindows exit procedure, which is searched for in
  [user-name.DECW] and then in SYS$LOGIN:, is used to per-
  form DECwindows application specific activities after the
  execution of a DECwindows application.

  For example the procedure [user-name.DECW]CMS_
  EXIT.COM might contain commands to deassign the clear
  the default CMS library. DECwindows application codes are
  listed under the dw-appl-code _ENTER.COM section.

  dw-appl-code _LOGIN.COM
  A DECwindows login procedure, which is searched for in
  [user-name.DECW] and then in SYS$LOGIN:, is used to per-
  form DECwindows application specific activities prior to the
  first execution of the application image. For example the
  procedure [user-name.DECW]CMS_LOGIN.COM might
  contain commands to define a CMS library search list of all
  the CMS librariues that the user has access to.

  LOGICALS.COM
  The user LOGICAL.COM procedure, which is searched for
  in [user-name.SFT] and then in SYS$LOGIN:, is used to de-
  fine user based logical names in either the process, job or user
  logical name tables. This procedure should use the DEFAPP
  and DEFROT commands to define the logical names

  LOGIN.COM
  The user LOGIN.COM procedure (or any other procedure as
  specified by the users authorization LGICMD attribute) is ex-
  ecuted by the LOGINOUT image after the SYLOGIN.COM
  procedure.

  SYLOGIN.COM
  The SYLOGIN procedure is executed by the LOGINOUT
  image after setting up the process information, but be-
  fore executing the users LOGIN.COM procedure (or or
  any other procedure as specified by the users authorization
  LGICMD attribute). It is defined by the system logical name
  SYS$SYLOGIN which is normally defined as

  SYS$MANAGER:SYLOGIN.COM.
  This procedure includes access to a number of user definable
  hooks as follows: User Procedure Usage LOGICALS.COM
  Define user based logicals in either the process, job or user
  logical name tables. dw-appl-code _ENTER.COM Enter
  procedure for the specified DECwindows application. dw-
  appl-code _EXIT.COM Exit procedure for the specified
  DECwindows application. dw-appl-code _LOGIN.COM Login
  procedure for the specified DECwindows application. The
  user procedures are described in further detail below.