Publications for this product are offered in Adobe Portable Document Format (PDF) and should
be compliant with accessibility standards. If you experience difficulties
when using PDF files, you can view the information through the z/OS® Internet Library website or IBM® Knowledge
Center. If you continue to experience problems, send an email
to mhvrcfs@us.ibm.com or write to:
- IBM Corporation
- Attention: MHVRCFS Reader Comments
- Department H6MA, Building 707
- 2455 South Road
- Poughkeepsie, NY 12601-5400
- USA
Accessibility features help a user who has a physical disability,
such as restricted mobility or limited vision, to use software products
successfully. The major accessibility features in z/OS enable users to:
- Use assistive technologies such as screen readers and screen magnifier
software
- Operate specific or equivalent features using only the keyboard
- Customize display attributes such as color, contrast, and font
size
Using assistive technologies
Assistive
technology products, such as screen readers, function with the user
interfaces found in z/OS. Consult
the assistive technology documentation for specific information when
using such products to access z/OS interfaces.
Keyboard navigation of the user interface
Users
can access z/OS user interfaces
using TSO/E or ISPF. See z/OS TSO/E Primer, z/OS TSO/E User's Guide, and z/OS ISPF User's Guide Vol I for information
about accessing TSO/E and ISPF interfaces. These guides describe how
to use TSO/E and ISPF, including the use of keyboard shortcuts or
function keys
(PF keys). Each guide includes the default settings for the PF keys
and explains how to modify their functions.
z/OS information
z/OS information is accessible using screen
readers with the BookServer or Library Server versions of z/OS books in the Internet library
at www.ibm.com/systems/z/os/zos/bkserv/.
One exception is command syntax that is published
in railroad track format, which is accessible using screen readers
with IBM Knowledge
Center, as described in Dotted decimal syntax diagrams.
Dotted decimal syntax
diagrams
Syntax diagrams are provided in dotted decimal
format for users accessing IBM Knowledge Center using a screen reader.
In dotted decimal format, each syntax element is written on a separate
line. If two or more syntax elements are always present together (or
always absent together), they can appear on the same line, because
they can be considered as a single compound syntax element.
Each
line starts with a dotted decimal number; for example, 3 or 3.1 or
3.1.1. To hear these numbers correctly, make sure that your screen
reader is set to read out punctuation. All the syntax elements that
have the same dotted decimal number (for example, all the syntax elements
that have the number 3.1) are mutually exclusive alternatives. If
you hear the lines 3.1 USERID and 3.1 SYSTEMID, you know that your
syntax can include either USERID or SYSTEMID, but not both.
The
dotted decimal numbering level denotes the level of nesting. For example,
if a syntax element with dotted decimal number 3 is followed by a
series of syntax elements with dotted decimal number 3.1, all the
syntax elements numbered 3.1 are subordinate to the syntax element
numbered 3.
Certain words and symbols are used next to the dotted
decimal numbers to add information about the syntax elements. Occasionally,
these words and symbols might occur at the beginning of the element
itself. For ease of identification, if the word or symbol is a part
of the syntax element, it is preceded by the backslash (\) character.
The * symbol can be used next to a dotted decimal number to indicate
that the syntax element repeats. For example, syntax element *FILE
with dotted decimal number 3 is given the format 3 \* FILE. Format
3* FILE indicates that syntax element FILE repeats. Format 3* \* FILE
indicates that syntax element * FILE repeats.
Characters such
as commas, which are used to separate a string of syntax elements,
are shown in the syntax just before the items they separate. These
characters can appear on the same line as each item, or on a separate
line with the same dotted decimal number as the relevant items. The
line can also show another symbol giving information about the syntax
elements. For example, the lines 5.1*, 5.1 LASTRUN, and 5.1 DELETE
mean that if you use more than one of the LASTRUN and DELETE syntax
elements, the elements must be separated by a comma. If no separator
is given, assume that you use a blank to separate each syntax element.
If
a syntax element is preceded by the % symbol, this indicates a reference
that is defined elsewhere. The string following the % symbol is the
name of a syntax fragment rather than a literal. For example, the
line 2.1 %OP1 means that you should see separate syntax fragment OP1.
The
following words and symbols are used next to the dotted decimal numbers:
- A question mark (?) means an optional syntax element. A dotted
decimal number followed by the ? symbol indicates that all the syntax
elements with a corresponding dotted decimal number, and any subordinate
syntax elements, are optional. If there is only one syntax element
with a dotted decimal number, the ? symbol is displayed on the same
line as the syntax element, (for example 5? NOTIFY). If there is more
than one syntax element with a dotted decimal number, the ? symbol
is displayed on a line by itself, followed by the syntax elements
that are optional. For example, if you hear the lines 5 ?, 5 NOTIFY,
and 5 UPDATE, you know that syntax elements NOTIFY and UPDATE are
optional; that is, you can choose one or none of them. The ? symbol
is equivalent to a bypass line in a railroad diagram.
- An exclamation mark (!) means a default syntax element. A dotted
decimal number followed by the ! symbol and a syntax element indicate
that the syntax element is the default option for all syntax elements
that share the same dotted decimal number. Only one of the syntax
elements that share the same dotted decimal number can specify a !
symbol. For example, if you hear the lines 2? FILE, 2.1! (KEEP), and
2.1 (DELETE), you know that (KEEP) is the default option for the FILE
keyword. In this example, if you include the FILE keyword but do not
specify an option, default option KEEP will be applied. A default
option also applies to the next higher dotted decimal number. In this
example, if the FILE keyword is omitted, default FILE(KEEP) is used.
However, if you hear the lines 2? FILE, 2.1, 2.1.1! (KEEP), and 2.1.1
(DELETE), the default option KEEP applies only to the next higher
dotted decimal number, 2.1 (which does not have an associated keyword),
and does not apply to 2? FILE. Nothing is used if the keyword FILE
is omitted.
- An asterisk (*) means a syntax element that can be repeated 0
or more times. A dotted decimal number followed by the * symbol indicates
that this syntax element can be used zero or more times; that is,
it is optional and can be repeated. For example, if you hear the line
5.1* data area, you know that you can include one data area, more
than one data area, or no data area. If you hear the lines 3*, 3 HOST,
and 3 STATE, you know that you can include HOST, STATE, both together,
or nothing.
Notes: - If a dotted decimal number has an asterisk (*) next to it and
there is only one item with that dotted decimal number, you can repeat
that same item more than once.
- If a dotted decimal number has an asterisk next to it and several
items have that dotted decimal number, you can use more than one item
from the list, but you cannot use the items more than once each. In
the previous example, you could write HOST STATE, but you could not
write HOST HOST.
- The * symbol is equivalent to a loop-back line in a railroad syntax
diagram.
- + means a syntax element that must be included one or more times.
A dotted decimal number followed by the + symbol indicates that this
syntax element must be included one or more times; that is, it must
be included at least once and can be repeated. For example, if you
hear the line 6.1+ data area, you must include at least one data area.
If you hear the lines 2+, 2 HOST, and 2 STATE, you know that you must
include HOST, STATE, or both. Similar to the * symbol, the + symbol
can only repeat a particular item if it is the only item with that
dotted decimal number. The + symbol, like the * symbol, is equivalent
to a loop-back line in a railroad syntax diagram.