The most common and most likely answer to this crossword clue is the 7 letter word SCROLLS
I've seen this crossword clue in Financial Times
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More clues leading to the result SCROLLS
Buddy explains!
The straight part
We know that "Moves up or down/ for better viewing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case moves up or down/ for better viewing = scrolls.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SCROLLS mean?
SCROLLS noun- A roll of paper or parchment; a writing formed into a roll.
- An ornament formed of undulations giving off spirals or sprays, usually suggestive of plant form. Roman architectural ornament is largely of some scroll pattern.
- Spirals or sprays in the shape of an actual plant.
- A mark or flourish added to a person's signature, intended to represent a seal, and in some States allowed as a substitute for a seal. [U.S.] Alexander Mansfield Burrill.
- The carved end of a violin, viola, cello or other stringed instrument, most commonly scroll-shaped but occasionally in the form of a human or animal head.
- A skew surface.
- A kind of sweet roll baked in a somewhat spiral shape.
- The incremental movement of graphics on a screen, removing one portion to show the next.
- (hydraulics) A spiral waterway placed round a turbine to regulate the flow.
- A turbinate bone.
- To change one's view of data on a computer's display, typically using a scroll bar or a scroll wheel to move in gradual increments.
- To move in or out of view horizontally or vertically.
- To flood a chat system with numerous lines of text, causing legitimate messages to scroll out of view before they can be read.