编辑“︁Template:Overlay/doc”︁（章节）

==Template parameters==
{| class="wikitable" style="background-color:white"
| style="background-color:whitesmoke" | '''Parameter Name'''
| style="background-color:whitesmoke" | '''Required'''
| style="background-color:whitesmoke" | '''Description'''
| style="background-color:whitesmoke" | '''Values'''
|-
| image || no || The image.  If not set then only the legend is presented. || Image file name.
|-
| width || no || Width of the image in pixels.  Defaults to 500. || Number.
|-
| height || no || Height of the image in pixels.  Defaults to 500. || Number.
|-
| columns || no || The number of columns to display the legend in.  Defaults to 3.  Set to 0 to not display any legend. || Number == 0, 1, 2, 3, . . .
|-
| grid || no || Set to 'yes' to turn on the coordinate grid to allow easier determination of overlay coorindates while editting.  Defaults to 'no'.  All values other than 'yes' are equivalent to 'no'. || Text == yes.
|-
| link || no || Set to 'yes' to turn on default linking of overlay and legend entry.  Defaults to 'no'.  All values other than 'yes' are equivalent to 'no'. || Text == yes.
|-
| legendbox || no || Set to 'no' to turn off a box / border around each legend group set of overlays.  Defaults to 'yes'.  All other values other than 'no' are equivalent to 'yes'. || Text == no.
|-
| float || no || Floats the image and legend.  Defaults to centering the image and legend on the page. || Text == right, left.
|-
| overlay || no || Determines whether or not the overlays are presented when an image is available.  Defaults to 'yes'.  All values other than 'no' are equivalent to 'yes'. || Text == no.
|-
| border || no || Determines whether or not a border is placed around the whole presentation.  Defaults to 'yes'.  All values other than 'no' are equivalent to 'yes'. || Text == no.
|-
| legend1title || no || Text for legend1 title. || Optionally linked text.
|-
| legend1start || no || The number of the first overlay to appear in legend1.  Defaults to the first overlay set, otherwise to the previous legend end plus 1 if there is a previous legend. || Number == 1, . ., 30.
|-
| legend1end || no || The number of the last overlay to appear in legend1.  Defaults to the next legend start less 1 if there is a next legend, otherwise to the last set overlay. || Number == 1, . ., 30.
|-
| || colspan="2" | Both legend starts and legend ends do not need to be provided.  Legend starts only, or, legend ends only, for each legend may be provided. ||
|-
| overlay1form || no || The form of the overlays.  The default form is an image number, for example, [[File:1 white, red rounded rectangle.svg|50x13px]].  Other settings allow textual numbers, for example, <span style="color:red">1</span>, or coloured tags, for example, <span style="background-color:red">  </span>.  Defaults to the previous overlay form, or to 'image' if no previous overlay form. || Text == image, text, colour/color.
|-
| overlay1 || no || Text for overlay1 for the legend.  Defaults to overlay1tip if any. || Text.  Do not link.  The template will link.
|-
| overlay1colour || no || Colour of overlay1.  Defaults to the previous overlay colour, or to 'red' if no previous overlay colour. || Text == red, green, blue.
|-
| overlay1tip || no || Pop up tool tip text to appear when the screen pointer is over overlay1.  Defaults to overlay1. || Text.
|-
| overlay1left || no || Distance in pixels of the left edge of overlay1 from the left side of the image. || Number.
|-
| overlay1top || no || Distance in pixels of the top edge of overlay1 from the top side of the image. || Number.
|-
| overlay1link || no || Text to be used as a link for the overlay legend text.  Defaults to overlay1 if link is not set to no. || Text.  Do not link.
|-
| overlay1left1 || no || The same as overlay1left. || As per overlay1left.
|-
| overlay1top1 || no || The same as overlay1top. || As per overlay1top.
|-
| overlay1left2 || no || The left ordinate for a second position of overlay1. || As per overlay1left.
|-
| overlay1top2 || no || The top ordinate for a second position of overlay1. || As per overlay1top.
|-
| overlay1left3 || no || The left ordinate for a third position of overlay1. || As per overlay1left.
|-
| overlay1top3 || no || The top ordinate for a third position of overlay1. || As per overlay1top.
|}

<includeonly>
<!-- CATEGORIES AND INTERWIKIS HERE, THANKS -->
[[Category:Graphic templates|Overlay]]
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