Add tokenquote interface

doc/texinfo/overview.texi

@@ -76,6 +76,8 @@ The following well-known solidity interfaces are partially implemented in CIC na
 
 @include tokenlimit.sol.texi
 
+@include tokenquote.sol.texi
+
 @include tokenratechange.sol.texi
 
 @include tokenswap.sol.texi

doc/texinfo/tokenlimit.sol.texi

@@ -2,7 +2,7 @@
 
 Define limits of value amounts of tokens that individual addresses can hold.
 
-Limits are inclusive; a limit for 42 means transfer resulting in a token balance _higher_ than 42 should be rejected.
+Limits are inclusive; a limit for 42 means transfer resulting in a token balance @emph{higher} than 42 should be rejected.
 
 A return value of 0 indicates that the token is categorically not accepted by the holder.
 

doc/texinfo/tokenquote.sol.texi

@@ -0,0 +1,20 @@
+@subsection TokenQuote
+
+Quote an output token value for a given value of input tokens.
+
+Both input and output value is denominated in the smallest available unit of respective tokens.
+
+@subsubsection ERC165 Interface identifier
+
+@include ../../build/TokenQuote.interface
+
+@subsubsection Solidity interface definition
+
+@include ../../build/contract_TokenQuote.texi
+
+@subsubsection Example implementation
+
+@itemize
+@item
+@uref{git://holbrook.no/erc20-limiter.git,}
+@end itemize