[macros] Add "see above" macros

Author: tkoeppe

source/macros.tex

@@ -463,6 +463,8 @@
 \newcommand{\unspecbool}{\UNSP{unspecified-bool-type}}
 \newcommand{\seebelow}{\UNSP{see below}}      % macro length: 0
 \newcommand{\seebelownc}{\UNSPnc{see below}}  % macro length: 2
+\newcommand{\seeabove}{\UNSP{see above}}      % macro length: 0
+\newcommand{\seeabovenc}{\UNSPnc{see above}}  % macro length: 2
 \newcommand{\unspecuniqtype}{\UNSP{unspecified unique type}}
 \newcommand{\unspecalloctype}{\UNSP{unspecified allocator type}}