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The Google Docs ruler helps inspect margins and paragraph indents in a page-based document. Those controls are not interchangeable: moving an indent affects selected paragraphs, while changing page margins alters the surrounding document layout.
Show the ruler in the appropriate view
On desktop, review View and Show ruler. Confirm that the document mode and layout support the ruler you need; vertical-ruler behavior differs from the horizontal ruler and from pageless editing. Select a representative paragraph before interpreting its markers.
Distinguish paragraph markers from margins
First-line and hanging indents control where parts of a paragraph begin. A marker can move text without changing the page's margin. Make a small adjustment and inspect a normal paragraph and a list item so the effect is visible.
Review the whole selected range
Multiple selected paragraphs can contain different settings. Avoid dragging markers across the entire document merely to fix one misaligned item. Check tabs, list formatting and pasted text when a paragraph behaves differently, then inspect the exported layout.
A practical checklist
- Confirm the desktop document view.
- Select the paragraph you intend to change.
- Separate margins from paragraph indents.
- Check first-line and hanging-indent behavior.
- Review nearby lists and the export.
Worked example
Illustrative example: a writer thinks the left page margin is wrong because one paragraph begins farther right. Selecting that paragraph reveals an indent. They correct the paragraph setting and leave the page margins intact, avoiding an unnecessary change to every table and heading.
Common questions
Does showing the ruler alter the document? No. Will moving a paragraph marker change every page margin? Not necessarily; identify the control first. Why do pasted paragraphs differ? They may retain paragraph or list formatting from the original source.
What to do next
Use the ruler as a diagnostic aid, then keep a consistent paragraph style. Recheck intentional exceptions rather than applying a broad reset to the entire file.
Sources and further reading
Related reading
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