Check out example codes for "svg rect". It will help you in understanding the concepts better.

Code Example 1

<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
  <rect width="100" height="100" x="50" y="50"/>
</svg>

Code Example 2

<rect width="100" height="100" x="50" y="50"/>

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