fix some typos in the docs

docs/algebra.tex

@@ -35,7 +35,7 @@ In order to solve the recursive domain equation in \Sref{sec:model} it is also e
   A function $f : \cofe \to \cofeB$ between two COFEs is \emph{non-expansive} (written $f : \cofe \nfn \cofeB$) if
   \[\All n, x \in \cofe, y \in \cofe. x \nequiv{n} y \Ra f(x) \nequiv{n} f(y) \]
   It is \emph{contractive} if
-  \[ \All n, x \in \cofe, y \in \cofe. (\All m < n. x \nequiv{m} y) \Ra f(x) \nequiv{n} f(x) \]
+  \[ \All n, x \in \cofe, y \in \cofe. (\All m < n. x \nequiv{m} y) \Ra f(x) \nequiv{n} f(y) \]
 \end{defn}
 Intuitively, applying a non-expansive function to some data will not suddenly introduce differences between seemingly equal data.
 Elements that cannot be distinguished by programs within $n$ steps remain indistinguishable after applying $f$.
@@ -211,7 +211,7 @@ Furthermore, discrete CMRAs can be turned into RAs by ignoring their COFE struct
 \end{defn}
 Note that every object/arrow in $\CMRAs$ is also an object/arrow of $\COFEs$.
 The notion of a locally non-expansive (or contractive) bifunctor naturally generalizes to bifunctors between these categories.
-\ralf{Discuss how we probably have a commuting square of functors between Set, RA, CMRA, COFE.}
+%TODO: Discuss how we probably have a commuting square of functors between Set, RA, CMRA, COFE.
 
 %%% Local Variables: 
 %%% mode: latex

docs/logic.tex

@@ -135,7 +135,7 @@ Recursive predicates must be \emph{guarded}: in $\MU \var. \term$, the variable
 Note that $\always$ and $\later$ bind more tightly than $*$, $\wand$, $\land$, $\lor$, and $\Ra$.
 We will write $\pvs[\term] \prop$ for $\pvs[\term][\term] \prop$.
 If we omit the mask, then it is $\top$ for weakest precondition $\wpre\expr{\Ret\var.\prop}$ and $\emptyset$ for primitive view shifts $\pvs \prop$.
-\ralf{$\top$ is not a term in the logic. Neither is any of the operations on masks that we use in the rules for weakestpre.}
+%FIXME $\top$ is not a term in the logic. Neither is any of the operations on masks that we use in the rules for weakestpre.
 
 Some propositions are \emph{timeless}, which intuitively means that step-indexing does not affect them.
 This is a \emph{meta-level} assertion about propositions, defined as follows: