Macromedia dreamweaver 8-using dreamweaver Manual De Usuario

Using rulers, guides, and the grid to lay out pages

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To change ruler settings, do one of the following:

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To toggle rulers on and off, select View > Rulers > Show. 

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To change the origin, drag the ruler-origin icon (at the upper-left corner of the Design 
view of the Document window) anywhere on the page. 

To reset the origin to its default position, select View > Rulers > Reset Origin.

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To change the unit of measure, select Pixels, Inches, or Centimeters from the View > 
Rulers submenu.

Using guides

Guides are lines that you drag onto the document from the rulers. They help you place and 
align objects more precisely. You can also use guides to measure the size of page elements, or 
emulate the folds (visible areas) of web browsers.

To help you align elements, Dreamweaver lets you snap elements to guides, and snap guides 
to elements. (Elements must be absolutely positioned in order for the snap feature to work.) 
You can also lock guides to prevent them from being accidentally moved by another user.

To create a horizontal or vertical guide:

1.

Drag from the corresponding ruler.

2.

Position the guide in the Document window and release the mouse button. 

You can reposition the guide by dragging it again.

To show or hide guides:

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Select View > Guides > Show Guides.

To snap elements to guides:

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Select View > Guides > Snap to Guides.

To snap guides to elements:

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Select View > Guides > Guides Snap to Elements.

To lock or unlock all guides:

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Select View > Guides > Lock Guides.

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By default, guides are recorded as absolute pixel measurements from the top or left 
side of the document, and are shown relative to the origin of the ruler. To record the 
guide as a percentage, press the Shift key while you create or move the guide.

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When you resize elements, such as layers, tables, and images, the resized elements 
snap to guides.