Free Size Mode and Page Size Mode

A document window can operate in two different modes.
In Free Size mode, the window can have any size and any rectangular shape. Many users prefer this mode while examining spectra on-screen because it makes better use of the available space. You can toggle it with File > Free Size.
The alternative is Page Size mode. In this mode, the proportions of the window are the same as those of the printed page. Resizing the window changes the apparent scale (zoom factor) of the plot on-screen.

To Print a Spectrum:

When you include a document in a poster, or when you use the commands Window > Tile..., the window is forced into the Free Size mode.

Related Topics

Printing Your Spectra Always in the Same Way

Exporting a High Resolution Bitmap