Editing Augmented Backus–Naur form (section)

===Incremental alternatives===
<code>Rule1 =/ Rule2</code>

Additional alternatives may be added to a rule through the use of <code>=/</code> between the rule name and the definition.

The rule
* {{code|1=ruleset = alt1 / alt2|2=abnf}}
* {{code|1=ruleset =/ alt3|2=abnf}}
* {{code|1=ruleset =/ alt4 / alt5|2=abnf}}
is therefore equivalent to 
* {{code|1=ruleset = alt1 / alt2 / alt3 / alt4 / alt5|2=abnf}}