fixed documentation regarding floating point line width

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@459 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/doc/rrdgraph_graph.pod b/doc/rrdgraph_graph.pod
index 23e3235..6a3db05 100644 (file)
--- a/doc/rrdgraph_graph.pod
+++ b/doc/rrdgraph_graph.pod
@@ -14,7 +14,7 @@ B<COMMENT>B<:>I<text>
 
 B<VRULE>B<:>I<vname>B<#>I<color>[B<:>I<legend>]
 
-B<LINE>I<width>B<:>I<vname>B<#>I<color>[B<:>I<legend>][B<:>B<STACK>]
+B<LINE>[I<width>]B<:>I<vname>B<#>I<color>[B<:>I<legend>][B<:>B<STACK>]
 
 B<AREA>B<:>I<vname>B<#>I<color>[B<:>I<legend>][B<:>B<STACK>]
 
@@ -177,17 +177,17 @@ maximum) red, green and blue. Optionally, a legend box and string is
 printed in the legend section. I<time> may be a number or a variable
 from a B<VDEF>. It is an error to use I<vname>s from B<DEF> or B<CDEF> here.
 
-=item B<LINE>I<width>B<:>I<{vname or number}>B<#>I<color>[B<:>I<legend>]
+=item B<LINE>[I<width>]B<:>I<{vname or number}>B<#>I<color>[B<:>I<legend>]
 [ C<:STACK> ]
 
-Draw a line of the specified width onto the graph. If the color
-is not specified, the drawing is done 'invisibly'. This is useful when
-stacking something else on top of this line. Also optional is the
-legend box and string which will be printed in the legend section
-if specified. The B<vname> can be generated by B<DEF>, B<VDEF>, and
-B<CDEF>.  If the optional B<STACK> modifier is used, this line is
-stacked on top of the previous element which can be a B<LINEx> or
-an B<AREA>
+Draw a line of the specified width onto the graph. I<width> can be a
+floating point number. If the color is not specified, the drawing is done
+'invisibly'. This is useful when stacking something else on top of this
+line. Also optional is the legend box and string which will be printed in
+the legend section if specified. The B<vname> can be generated by B<DEF>,
+B<VDEF>, and B<CDEF>.  If the optional B<STACK> modifier is used, this line
+is stacked on top of the previous element which can be a B<LINE> or an
+B<AREA>
 
 =item B<AREA>B<:>I<vname>B<#>I<rrggbb>[I<aa>][B<:>I<legend>][B<:STACK>]
 
@@ -245,7 +245,7 @@ When stacking, an element is not placed above the X-axis but rather
 on top of the previous element.  There must be something to stack
 upon.
 
-You can use an B<invisible> LINEx or AREA to stacked upon.  
+You can use an B<invisible> LINE or AREA to stacked upon.  
 
 An B<unknown> value makes the entire stack unknown from that moment on.
 You don't know where to begin (the unknown value) and therefore do