aspect_ratio = real;
Specify an image's aspect ratio.
This attribute specifies the ratio of an image's width divided by its height. A common aspect ratio is 1.33, where width = 4 and height = 3.
To create images with the correct aspect ratio, create a paperspace viewport that is 1.333 units wide and 1 unit high, and then scale up as desired. Switch to modelspace to properly center the image, using Pan and Zoom, and create a slide. Note that slide libraries are not supported.
For real, specify a . When real = 0.0, the image tile is expands to fit to image size. The default = (none).
aspect_ratio = 0.0;
NOTE The aspect_ratio attribute is used with the aspect_ratio attribute when you use both height and width.
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Programming Overview of DCL (Dialog Control Language)
About Predefined Attributes