Thank you MrSwiss , it's starting to sink in now (though I need to study more) .MrSwiss wrote:Newer boolean 'eval': AndAlso / OrElse, can also be written *old style* (with And / Or)
It appears that I always considered it all to be Boolean logic only (enhanced by some mathematics I once learned) .
Until I master it better I think that I will try to stick with the Boolean logic as much as I can.
P.S.
Ref. :
https://en.wikipedia.org/wiki/Boolean_algebra
https://en.wikipedia.org/wiki/Boolean_data_type