start rule: <select from navigator or grammar> in antlr plugin in IntelliJ

Question

I have created simple grammar file in IntelliJ but failing to see any effect of Antlr plugin. When I open file in ANTLR preview, it says

start rule: <select from navigator or grammar>

What is start rule? How to select it from navigator? How to select it from grammar?

question from:https://stackoverflow.com/questions/36468900/start-rule-select-from-navigator-or-grammar-in-antlr-plugin-in-intellij

Answer 1

So I haven't found a way to mark permanently one rule as a start rule, however in the right-click context menu for the grammar, there are two options that relate to ANTLR, one of them is 'test rule xyz', that did the job: