Hi Igor,
From the CWEB User Manual:
http://www.literateprogramming.com/cweb.pdf (page 8)
@^[TMCc] * The control text that follows, up to the next ‘@>’, will be
entered into the index together with the identifiers of the C program;
this text will appear in roman type. For example, to put the phrase
“system dependencies” into the index that is output by CWEAVE,
type ‘@^system dependencies@>’ in each section that you want to
index as system dependent.
Best regards,
Robert