%TWOCOLUMNS% ...text... %ENDCOLUMNS%
to get a page layout with two columns. The layout is responsive, e.g. it automatically adjusts to a single column (2 => 1) depending on the window width or screen width of the device used. The 300 pixels minimum width of a column determines the number of columns shown. Embedded images scale down automatically to the width of the screen if needed.
%TWOCOLUMNS% ... %ENDCOLUMNS%