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[Henri Lesourd <address@hidden>]

address@hidden wrote:
You can enter the appropriate characters by using a standard text editor 
>
> Hi,
> 
> Please, can someone explain to me how to change (if possible) the
> background colour of just a single paragraph in the middle of a
> document.
> 
> Many thanks.
>
1) Create a table with Insert->Table->Plain block ; (this way, you
   create a table which has exactly one line and one column) ;
2) Type some text inside the (only) cell of your table ;
3) Select the table, and do "Table->Cell background color" to choose
   a background color ;
4) Select the table again, and do a "Table->Cell border->Border" ;
   then choose a value of "0pt" for the border : this will remove
   the line around the table ;
5) Select the table again, and do a "Table->Cell border->Padding" ;
   then choose a value of "0pt" for the padding : this will remove
   the padding around the table ; now, the text in the table is
   exactly like the surrounding text, but with a customized background
   color !-) ;

There should be an option to change the background color of a part
of the text ; unfortunately, the following markup :
[[
   <with|bg-color|green|Hello2 !>
]]

appears to be not working (since this one :
[[
   <with|color|green|Hello1 !>
]]

works very well).

So, using tables is an effective workaround to solve the background
problem. Please note that it works only for parts of a line, or for
whole paragraphs. It does not work for parts of the text which look
like this :
<<
XXXXXXXXXXXXXXXXXXXXX--My selected selected selected selected
selected selected selected selected selected selected selected
selected selected selected part of the text--XXXXXXXXXXXXXXXXX
>>

Regards, Henri