Node:sub-footnote, Next:who-is-on-old, Previous:add-footnote, Up:Protocol Requests
        sub-footnote [38] (( text-no            :       Text-No;
                             footnote-to        :       Text-No ))
                -> ( );
This call removes the text text-no from footnote-to's list
of footnotes.  Only the author of a footnote may remove it.
Example:
        1 26 1
        =1 2 22 12 17 6 97 4 197 1 5 4 256 1 1 { 5 2 }
        1 26 2
        =1 49 49 18 17 6 97 4 197 1 5 1 52 1
           4 { 0 2 6 1 4 1 9 19 52 18 17 6 97 4 197 1 }
        1 38 2 1
        =1
        1 26 1
        =1 2 22 12 17 6 97 4 197 1 5 4 256 1 0 *
        1 26 2
        =1 49 49 18 17 6 97 4 197 1 5 1 52 1 2 { 0 2 6 1 }
In this example text 2 is a footnote to text 1, as shown by the
misc-info lists of the two texts.  The sub-footnote is called. 
The misc-info lists are changed to reflect the change.
login-first
no-such-text
text-no or footnote-to does not exist or is
secret. 
not-footnote
text-no is not a footnote to footnote-to. 
permission-denied
text-no and not enough privileges
set and enabled to complete call anyway.