### supsub

    // Usage: pl -gif supsub.htm
    //
    // Superscripts and subscripts example.
    // Available in versions 2.3+...
    // Text must be rendered in a monospace font for it to work.

    // superscripts/subscripts capability must be enabled first...
    #proc settings
    enable_suscripts: yes

    #proc rect
      rectangle: 1 1 3 3

    #proc annotate
      location: 2 2.8
      text:
    	a^2^ + b^2^ + c^2^
            CO`2` and H`2`O

    #proc annotate
      location: 1.2 1.8
      verttext: yes
      text:
    	a^2^ + b^2^ + c^2^
            CO`2` and H`2`O