System Parameters

'OM'

Old Style Mask

0

MSK( ) supports industry standard Perl compatible RegEx.

1

MSK( ) supports POSIX compatible RegEx, the same as Unix Grep.

2

MSK( ) supports a sub-set of POSIX compatible RegEx.

Where:

     The | operator works on the character that precedes it and comes after it unless parentheses are used.

Example:

     "cat|dog|pig" does not match "I want a cat". To match, you need to use the pattern "(cat)|(dog)|(pig)".

Note:
This is a legacy mode retained for compatibility.