Enable/Disable Sequence Lower Option

PURPOSE: The SEQUENCE LOWER option controls whether ACCENT R distinguishes lower from upper case characters. This command is valid in a CM, PM, SF and as a direct command.

SYNTAX

{ENABLE; DISABLE} SEQUENCE LOWER [{IF; UNLESS} clause]

ENABLE	directs ACCENT R to view upper case characters as different from lower case characters. This option causes a true ASCII sort or index, in which all upper case characters precede all lower case characters. It also affects all string comparisons.
DISABLE	directs ACCENT R not to distinguish between lower and upper case characters. This is the default state.
{IF; UNLESS} clause	specifies certain criteria that must be met for the ENABLE or DISABLE command to take effect.

EXAMPLE

*SORT ON FIRST SHOW FIRST
1b
1B
A1
a2
AB
Ab

*EXTRACT IF FIRST BEGINS WITH "A"
A1
a2
AB
Ab

*ENABLE SEQUENCE LOWER

*SORT ON FIRST SHOW FIRST
1B
1b
A1
AB
Ab
a2

*EXTRACT IF FIRST BEGINS WITH "A"
A1
AB
Ab

NOTES: A Data Index (DI) must be used with SEQUENCE LOWER in the same state as when the DI was formed; i.e., if SEQUENCE LOWER is enabled when a DI is formed, it must also be enabled when the DI is used.