While is the most likely technical match for "18 179 WEB," the numbers could also refer to:
Design text blocks to be wide enough or tall enough to accommodate text that has doubled in size.
Ensure text is programmed to wrap naturally within its block rather than being clipped or disappearing behind other elements.
Technique G179 ensures that web content and functionality are not lost when a user up to 200% on a page where text containers have fixed widths. Feature Overview: Text Resizing Compatibility
If text overflows its container after resizing, the container should automatically provide scrollbars so the user can still read the content.
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