The context specification area is used to display information
about contexts, and consists of the following fields:
o context
o parent
o context file
o context database entries
The context specification area consists of read-only fields. Use
the menu bar functions to make changes to any of these fields.
Context Field
You can display a context name in the Context field by single-
clicking on a line in the Context Database Entries field or by
selecting the New menu item from the File menu.
Parent Field
The DECset Environment Manager does not allow a circular
ancestral chain. If a circular chain is detected, the DECset
Environment Manager displays an error message dialog box, and
aborts the operation on that context.
Context File Field
If you select an existing context file from the Context Database
Entries field, the name of the context and the associated
information is displayed in the read-only Context, Parent, and
Context File fields.
For a new context, or one for which you are modifying the
associated context file specification, you may use the Modify
Database Entry... menu item from the File menu to bring up a file
selection widget.
If any part of the file specification is not supplied; for
example, the disk name, the corresponding component of your
current default directory specification is used. If the name
or the file type is not specified, the name of the currently-
specified context is used as the file name and .DECSET_CONTEXT is
used as the file type.
Context Database Entries Field
The context names (and some associated information) are retrieved
from the context database listed in the Context Database Entries
field of the DECset context window.
1 – ctxt TxtF
You can display a context name in the Context field by single-
clicking on a line in the Context Database Entries field or by
selecting the New menu item from the File menu.
2 – parnt TxtF
The DECset Environment Manager does not allow a circular
ancestral chain. If a circular chain is detected, the DECset
Environment Manager displays an error message dialog box, and
aborts the operation on that context.
3 – ctxtFil TxtF
If you select an existing context file from the Context Database
Entries field, the name of the context and the associated
information is displayed in the read-only Context, Parent, and
Context File fields.
For a new context, or one for which you are modifying the
associated context file specification, you may use the Modify
Database Entry... menu item from the File menu to bring up a file
selection widget.
If any part of the file specification is not supplied; for
example, the disk name, the corresponding component of your
current default directory specification is used. If the name
or the file type is not specified, the name of the currently-
specified context is used as the file name and .DECSET_CONTEXT is
used as the file type.
4 – knownCtxts Form
The context names (and some associated information) are retrieved
from the context database listed in the Context Database Entries
field of the DECset context window.
4.1 – knCtxtsFrm ScrLst
The context names (and some associated information) are retrieved
from the context database listed in the Context Database Entries
field of the DECset context window.
5 – apply Btn
The Apply button causes the selected context object to be applied
to any DECset tools displaying on the same DECwindows display as
is the Context window. You may also double-click on the context
in the Context Database Entries field to apply the context. In
addition to applying this context, any command line qualifiers
that are in effect are then re-applied to the tool.
A named context must be saved before a context apply operation is
initiated.
6 – save Btn
The Save button saves the context file shown in the Context File
field.
This action saves the current definitions/settings (possibly
modified via the Settings menu) to the context file indicated
in the Context File field of the main window. If the value in
the Context File field has changed since the last Save operation
for the current context, the DECset Environment Manager writes
the new file specification to the context database. For a new
context, the Save menu item ensures that the context is known
by adding the specified context name and associated context file
specification to the context database. The DECset Environment
Manager displays a confirmation dialog box for final approval
before saving new information in an existing context database
entry and/or an existing context file. The saving of a context
will affect other DECset tools displaying on the DECwindows
display only when that context is subsequently applied.