[A68-JARGON][COMMITTED] New term: gomma

[Mohammad-Reza Nabipoor]

Hi Jose.

> +@subheading Meaning
> +@c man begin MEANING
> +In Algol 68 the go-on symbol, represented by a semicolon @code{;},
> +denotes serial elaboration, like in the serial clause @code{(a;b;c)}.
> +Conversely, the comma symbol @code{;} denotes collateral elaboration,

Typo error: you're using @code{;} instead of @code{,}.