// Displays the property option summary key.
private static void displayPropertyOptionKey(ConsoleApplication app) {
MessageBuilder builder;
app.println(INFO_DSCFG_HELP_DESCRIPTION_OPTION.get());
app.println();
builder = new MessageBuilder();
builder.append(" r -- ");
builder.append(INFO_DSCFG_HELP_DESCRIPTION_READ.get());
app.println(builder.toMessage());
builder = new MessageBuilder();
builder.append(" w -- ");
builder.append(INFO_DSCFG_HELP_DESCRIPTION_WRITE.get());
app.println(builder.toMessage());
builder = new MessageBuilder();
builder.append(" m -- ");
builder.append(INFO_DSCFG_HELP_DESCRIPTION_MANDATORY.get());
app.println(builder.toMessage());
builder = new MessageBuilder();
builder.append(" s -- ");
builder.append(INFO_DSCFG_HELP_DESCRIPTION_SINGLE_VALUED.get());
app.println(builder.toMessage());
builder = new MessageBuilder();
builder.append(" a -- ");
builder.append(INFO_DSCFG_HELP_DESCRIPTION_ADMIN_ACTION.get());
app.println(builder.toMessage());
}