9.4.3.3.3.5 gg.handler.name.format.presentColumnChar

Specifies a special column prefix for a column value that exists in the trail and is not NULL.

The character used to represent the state of the column can be customized. For example:

gg.handler.handler1.format.presentColumnChar=P

By default, the present column value is set to an empty string and does not show.