Positions 7 through 16 are a multiple-field area in which you can
specify option indicators.
Option indicators are 2-digit numbers from 01 to 99. Your program can set
option indicators on (hex F1) or off (hex F0) to select a field or keyword.
You can use option indicators to select fields to display different data on
different output operations instead of defining a different record format
for each combination of fields.
A condition is a grouping by AND of two through nine
indicators that must all be in effect before the field or keyword is selected. An
AND condition is set off if N is specified and it is set on if N
is not specified. You can specify a maximum of nine indicators for each condition
and nine conditions for each field or keyword. Therefore, a maximum of 81
indicators can be specified for each field or keyword. An AND condition occurs
when you specify a condition requiring that more than one indicator must be
on or off before the condition is satisfied. The first indicator you specify,
AND the second, AND the third, and so on, must all be in effect before the
condition is satisfied and the field or the keyword is selected. You must
specify the field or the keyword on the same line as the last (or only) set
of indicators specified.
You can also specify several conditions for a field or
keyword so that if any one of them is satisfied, the field or the keyword
is selected. This is called an OR relationship. In an OR relationship, if
the first condition is satisfied, OR the second condition, OR the third condition,
and so on, the field or the keyword is selected. Conditions within the OR
relationship can consist of just one indicator or can consist of several indicators
grouped together by AND. Indicators can be grouped by AND to form a condition.
Conditions can be grouped by OR to give your program several ways to select
the field or keyword.
- Position 7 (AND)
- If you need more than three indicators to form an AND
condition, specify the indicators on the next line or lines. You can specify
an A in position 7 on the second or following lines to continue the AND condition,
or you can leave it blank because A is the default.
- Position 7 (OR)
- If you specify several conditions that are to be grouped
by OR, each condition must start on a new line and each condition, except
the first, must have an O in position 7. An O specified for the first condition
produces a warning message, and that position is assumed to be blank.
- Position 8, 11, 14 (NOT)
- If you want an indicator to be off instead of on to satisfy a condition,
specify an N in the position just preceding the indicator (position 8, 11,
or 14).