To implement the possibility of combining different slection criteria for the signatures the following changes have been made to the way the signature construction is parsed:

1. The Notes formula part of the sub signature selection will now pass through the Parser. Therefore lookup commands can be used in the formula and will be populated before the execution of the actual formula

2. A new lookup type called 'intext' has been added - this lookup has one parameter 'type' that can be set to either 'int' or 'extl'

This lookup will return the text @true or @false when used in a Notes formula

intext type = 'int' is the equivalent of the subsignature type 'internal users'

intext type = 'extl' is the equivalent of the subsignature type 'external users'