1languagesystem DFLT dflt;
2
3feature test {
4    rsub [a A] [b B] [c C] q' [d D] [e E] [f F] by Q;
5    rsub [a A] [b B] [c C] [s - z]' [d D] [e E] [f F] by [S - Z];
6
7    # Having no context for a reverse chaining substitution rule
8    # is a little degenerate (we define a chain without linking it
9    # to anything else), but makeotf accepts this.
10    rsub p by P;
11} test;
12