Plotting line within the price chart

["IVA GmbH" <funnybiz@xxxx>]

Dear fellow users,
 
sorry for my ignorance:
 
As I understand it, it is only possible toplot 
custom lines within a separate custom window.
 
IŽd like to plot lines (i.e. connecting highs and 
lows selected by a proprietary filter) within the price chart 
ITSELF.
 
Is that possible or have I overlooked something in 
the help sections??
 
Thanks a lot and good trading 
 
Markus