small changes and fixes

doc/chapter/2architecture.tex

@@ -72,7 +72,7 @@ The internal representation of graphs is further explained in the section~\ref{s
 \end{figure}
 
 \section{Internal graph representation, \enquote{Model}}\label{sec:model}
-One feature that is important to us, is to be able to work with hierarchical graphs (cf. chapter~\ref{ch:progress}).
+One feature that is important to us, is to be able to work with hierarchical graphs (cf.\ chapter~\ref{ch:progress}).
 Therefore a node not only has edges to other nodes, but also it can contain other nodes and edges.
 So far this is similar to what we described in section~\ref{sec:inputFileFormat}.
 Additionally, there are multiple attributes that are used during the computation or as output variables.

doc/chapter/3progress.tex

@@ -21,9 +21,11 @@ The following features are either planned (\planned), under construction (\progr
         \item[\progress] Drawing the four extremal layouts and the combined layout separately.
         \item[\planned] Drawing the edges of the block graph (in a different color than other edges).
     \end{itemize}
-    \item[\done] Running the algorithm step by step manually (by pushing a button labeled \enquote{Step}).
+    \item[\done] Running the algorithm step by step manually.
     \item[\progress] Running the algorithm step by step with configurable delay.
     \item[\planned] Using debugger-like commands such as \enquote{step into}, \enquote{step over}, \enquote{step out}.
+    \item[\planned] Adding buttons and other graphical elements to support the user interface (low priority).
+    Currently there is only keyboard input (cf.\ section~\ref{sec:userInterface}).
     \item[\done] Working with hierarchical graphs.
     \item[\done] Scaling the display with the (adjustable) window size.
     \item[\planned] Creating ElkNode~\cite{noauthor_elk:_2018} objects from LayeredNode (\ref{sec:model}) objects

doc/chapter/4ui.tex

@@ -1,3 +1,7 @@
-Note that since the application is still under construction not all screenshots may be up to date.
+Note that since the application is still under construction, so not all screenshots may be up to date.
 
 \section{Graphical presentation of the running algorithm}\label{sec:graphicalPresentationOfTheRunningAlgorithm}
+\TODO{under construction}
+
+\section{User interface}\label{sec:userInterface}
+\TODO{under construction}