N Changes and New Features in V3.0

The following changes have occurred in the GRP_ system since version 2.0:

(1)

The maximum number of groups which can be active at any one time has been increased from 100 to 500.

(2)

An escape control character can now be defined which allows other control characters within a group expression to be treated literally (i.e. their usual special meaning is suppressed and they are trated like a normal text character if they are preceeded by an escape character). By default, no escape character is defined.

(3)

If the NULL control character is changed using GRP_SETCC, then any other control characters which are equal to the old NULL character are changed to the new NULL character, so long as the same call to GRP_SETCC does not explicitly set their value to something else.