.yinc..}, y increment on axes} -->
y increment on axes.
<p>
<li> `<font color="#82140F"><code>..ymargin..</code></font>'
<!-- latex: \index{@code{..ymargin..}, bottom margin} -->
Bottom margin in centimetres.
<p>
<li> `<font color="#82140F"><code>..ysize..</code></font>'
<!-- latex: \index{@code{..ysize..}, y-axis length} -->
y-axis length in centimetres.
<p>
<li> `<font color="#82140F"><code>..ytop..</code></font>'
<!-- latex: \index{@code{..ytop..}, y value at top of plot} -->
y value at top of plot
<p>
<