# Chapter 4. Changing magnification

The View menu offers entries to step through available magnifications: Zoom in and Zoom out. The available magnifications corresponds to the base resolution of the used pk-font and its reductions by integer factors.

The button bar presents these same commands plus two fixed magnifications for quick selection. You can use these to switch between a readable text size and a magnified view (there is no separate magnifier window) or between a readable size and a full page view. You can configure these fixed sizes with preferences dialog.

One non-obvious feature is the selection of scaling center. You can select with left mouse button the point on the page that does not move (if possible) when changing the magnification. Use this by clicking with left mouse button at the detail you want to see magnified and then push the magnified view button.