Add dim and italic attributes to style

Closes #74

doc/teapot.lyx

@@ -3711,6 +3711,20 @@ teapot
  always uses the maximum precision internally for calculations.
 \end_layout
 
+\begin_layout Subsubsection
+Dim
+\end_layout
+
+\begin_layout Standard
+This attribute is a simple true-false flag set with 
+\family sans
+dim()
+\family default
+ that determines whether the cell value will be displayed with dim characters,
+ if possible.
+ It defaults to false.
+\end_layout
+
 \begin_layout Subsubsection
 Bold
 \end_layout
@@ -3725,6 +3739,20 @@ bold
  It defaults to false.
 \end_layout
 
+\begin_layout Subsubsection
+Italic
+\end_layout
+
+\begin_layout Standard
+This attribute is a simple true-false flag set with 
+\family sans
+italic()
+\family default
+ that determines whether the cell value will be displayed in an italic font,
+ if possible.
+ It defaults to false.
+\end_layout
+
 \begin_layout Subsubsection
 Underline
 \end_layout
@@ -7200,7 +7228,37 @@ x
 x
 \emph default
  radians.
- 
+\end_layout
+
+\begin_layout Description
+
+\series medium
+style
+\emph on
+
+\begin_inset space ~
+\end_inset
+
+
+\series default
+\emph default
+dim
+\series medium
+([bool
+\emph on
+
+\begin_inset space ~
+\end_inset
+
+b
+\emph default
+])
+\series default
+ evaluates to a style token with the dim property set to 
+\emph on
+b
+\emph default
+, which defaults to true (and no other fields set).
 \end_layout
 
 \begin_layout Description
@@ -7793,6 +7851,37 @@ style
 \end_inset
 
 
+\series default
+\emph default
+italic
+\series medium
+([bool
+\emph on
+
+\begin_inset space ~
+\end_inset
+
+b
+\emph default
+])
+\series default
+ evaluates to a style token with the italic property set to 
+\emph on
+b
+\emph default
+, which defaults to true (and no other fields set).
+\end_layout
+
+\begin_layout Description
+
+\series medium
+style
+\emph on
+
+\begin_inset space ~
+\end_inset
+
+
 \series default
 \emph default
 justify