diff --git a/docs/latex/wx/sizer.tex b/docs/latex/wx/sizer.tex
index 8dae20ac6a..b7d1b8ee4e 100644
--- a/docs/latex/wx/sizer.tex
+++ b/docs/latex/wx/sizer.tex
@@ -54,11 +54,11 @@ The destructor.
 
 \membersection{wxSizer::Add}\label{wxsizeradd}
 
-\func{void}{Add}{\param{wxWindow* }{window}, \param{int }{option = 0},\param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
+\func{void}{Add}{\param{wxWindow* }{window}, \param{int }{proportion = 0},\param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
 
-\func{void}{Add}{\param{wxSizer* }{sizer}, \param{int }{option = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
+\func{void}{Add}{\param{wxSizer* }{sizer}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
 
-\func{void}{Add}{\param{int }{width}, \param{int }{height}, \param{int }{option = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
+\func{void}{Add}{\param{int }{width}, \param{int }{height}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
 
 Adds the {\it window} to the sizer. As wxSizer itself is an abstract class, the parameters
 have no meaning in the wxSizer class itself, but as there currently is only one class
@@ -76,11 +76,11 @@ horizontal boxes on the level beneath).}
 \docparam{width and height}{The dimension of a spacer to be added to the sizer. Adding spacers to sizers
 gives more flexibility in the design of dialogs; imagine for example a horizontal box with two buttons at the
 bottom of a dialog: you might want to insert a space between the two buttons and make that space stretchable
-using the {\it option} flag and the result will be that the left button will be aligned with the left
+using the {\it proportion} flag and the result will be that the left button will be aligned with the left
 side of the dialog and the right button with the right side - the space in between will shrink and grow with
 the dialog.}
 
-\docparam{option}{Although the meaning of this parameter is undefined in wxSizer, it is used in wxBoxSizer
+\docparam{proportion}{Although the meaning of this parameter is undefined in wxSizer, it is used in wxBoxSizer
 to indicate if a child of a sizer can change its size in the main orientation of the wxBoxSizer - where
 0 stands for not changeable and a value of more than zero is interpreted relative to the value of other
 children of the same wxBoxSizer. For example, you might have a horizontal wxBoxSizer with three children, two
@@ -93,7 +93,7 @@ using these flags. One is the border around a window: the {\it border}
 parameter determines the border width whereas the flags given here determine
 where the border may be (wxTOP, wxBOTTOM, wxLEFT, wxRIGHT or wxALL). The other
 flags determine the child window's behaviour if the size of the sizer changes.
-However this is not - in contrast to the {\it option} flag - in the main
+However this is not - in contrast to the {\it proportion} flag - in the main
 orientation, but in the respectively other orientation. So if you created a
 wxBoxSizer with the wxVERTICAL option, these flags will be relevant if the
 sizer changes its horizontal size. A child may get resized to completely fill
@@ -114,7 +114,7 @@ control even if its text is changed during run-time.}
 
 \docparam{userData}{Allows an extra object to be attached to the sizer
 item, for use in derived classes when sizing information is more
-complex than the {\it option} and {\it flag} will allow for.}
+complex than the {\it proportion} and {\it flag} will allow for.}
 
 \membersection{wxSizer::CalcMin}\label{wxsizercalcmin}
 
@@ -175,11 +175,11 @@ the current dimension.
 
 \membersection{wxSizer::Prepend}\label{wxsizerprepend}
 
-\func{void}{Prepend}{\param{wxWindow* }{window}, \param{int }{option = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
+\func{void}{Prepend}{\param{wxWindow* }{window}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
 
-\func{void}{Prepend}{\param{wxSizer* }{sizer}, \param{int }{option = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
+\func{void}{Prepend}{\param{wxSizer* }{sizer}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border = 0}, \param{wxObject* }{userData = NULL}}
 
-\func{void}{Prepend}{\param{int }{width}, \param{int }{height}, \param{int }{option = 0}, \param{int }{flag = 0}, \param{int }{border= 0}, \param{wxObject* }{userData = NULL}}
+\func{void}{Prepend}{\param{int }{width}, \param{int }{height}, \param{int }{proportion = 0}, \param{int }{flag = 0}, \param{int }{border= 0}, \param{wxObject* }{userData = NULL}}
 
 Same as \helpref{wxSizer::Add}{wxsizeradd}, but prepends the items to the beginning of the
 list of items (windows, subsizers or spaces) owned by this sizer.
diff --git a/docs/latex/wx/tsizer.tex b/docs/latex/wx/tsizer.tex
index e20b3bec55..618c9f7b04 100644
--- a/docs/latex/wx/tsizer.tex
+++ b/docs/latex/wx/tsizer.tex
@@ -193,7 +193,7 @@ the buttons shall be centred as the width of the dialog changes.
 It is the unique feature of a box sizer, that it can grow in both directions (height and
 width) but can distribute its growth in the main direction (horizontal for a row) {\it unevenly} 
 among its children. In our example case, the vertical sizer is supposed to propagate all its
-height changes to only the text area, not to the button area. This is determined by the {\it option} parameter
+height changes to only the text area, not to the button area. This is determined by the {\it proportion} parameter
 when adding a window (or another sizer) to a sizer. It is interpreted
 as a weight factor, i.e. it can be zero, indicating that the window may not be resized
 at all, or above zero. If several windows have a value above zero, the value is interpreted