Specifications

Chapter 13. Advanced Topics 161
%sthat point. The lines will scroll if this text does not fit in the viewport.
%sThe user font is used, the foreground colour is set to black and the
%sbackground is set to white.
Viewport definition Default value
width/height remaining part of screen
font user defined
shade black foreground on white
background
Viewport Line Text Styles
Tag Description
%Vs(mode[,param]) Set the viewport text style to ‘mode’ from this point forward
Mode can be the following:
Mode Description
clear Restore the default style
invert Draw lines inverted
color Draw the text coloured by the value given in ‘param’.
Functionally equivalent to using the %Vf() tag
Conditional Viewports
Any viewport can be displayed either permanently or conditionally. Defining a viewport
as %V(... will display it permanently.
• %Vl(’identifier’,...) This tag preloads a viewport for later display. ‘identifier’
is a single lowercase letter (a-z) and the ‘. . . ’ parameters use the same logic as the
%V tag explained above.
• %Vd(’identifier’) Display the ‘identifier’ viewport.
Viewports can share identifiers so that you can display multiple viewports with one
%Vd line.
Example
%?C<%Vd(a)|%Vd(b)>
%Vl(a,10,10,50,50,-)
%Cl(0,0,50,50,c,c)
%Cd
%Vl(a,0,70,70,14,1)
%s%acThere you have it: Album art.
%Vl(b,20,14,50,14,1)
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