The 'A' refers to the appropriate article ('a' or 'an') that references the noun it precedes. If the noun is a variable, you often don't know whether the noun is going to be start with a consonant or vowel ('apple' or 'banana', or 'Texas' or 'Illinois'). You could create a multiple choice variable [a/an] and select it each time, but OMG what a pain.
Intelligent A to the rescue. Simply insert the variable [**a] or [**a/an] in front of the variable it precedes and Pathagoras will handle the decision for you as the variables are being replaced via the Instant Database screen.
Here is an example of a sale made between two non-individual entities. (This example also takes advantage of *Aliases*):
THIS CONTRACT OF SALE is made this [DOCUMENT DATE], by [BUYER NAME], [**a] [ORGANIZATION STATE BUYER:*STATES*] [BUYER ENTITY TYPE] and [SELLER NAME], [**a/an] [ORGANIZATION STATE SELLER:*STATES*] [SELLER ENTITY TYPE] . . .
If you designate the Buyer Organization state as 'Florida', the 'intelligent a' will become just "a". If you designate the Seller Organization state as 'Alabama', the 'intelligent a' will become "an."
Beginning with version 2021.5, the Intelligent A will select the proper article for numbers. An 8 year old car; a 2 year old child, etc.
(You can use either [**a] or [**a/an]. The former, of course, is shorter, but the latter may be more informative to casual end users.)