ᴿ

Symbol

 * 1)  a superscript wildcard R, used i.a. for an indistinct rhotic consonant ⟨ᴿ⟩ or the rhotic (e.g. trilled) release of a consonant ⟨Cᴿ⟩.
 * 2)  a rising tone.
 * may be equivalent to ⟨ᴸᴴ⟩ (full rising tone), ⟨ᴹᴴ⟩ (high/mid rising tone) or ⟨ᴸᴹ⟩ (low rising tone).