current_link      333 src/help.c     select_next_link (const char *current_link)
current_link      337 src/help.c         if (current_link == NULL)
current_link      340 src/help.c         p = search_string_node (current_link, STRING_LINK_END);
current_link      352 src/help.c     select_prev_link (const char *current_link)
current_link      354 src/help.c         return current_link == NULL ? NULL : search_char_node (current_link - 1, CHAR_LINK_START, -1);