1. In the pcm_flag semantics, the inference of pcm_flag value is incorrect when the pcm_flag is not present due to the presence of num_subsequent_pcm in a previously coded coding unit, although the corrected inference is described in the num_subsequent_pcm semantics.
2. In the num_subsequent_pcm semantics, the meaning of "subsequent coding units" and "subsequent I_PCM coding units" are a little bit ambiguous.

Attachment includes suggested texts to improve the specifications of pcm_flag and num_subsequent_pcm semantics.