Samsung Xpress M2020W User Manual page 34

Media and tray
5
Setting the paper size and type
After loading paper in the paper tray, set the paper size and type.
To change the paper setting set in the machine, from the Printing preferences
window > Paper tab > Paper Type (see "Opening printing preferences" on page
36).
If you want to use special-sized paper such as billing paper, select Custom
in the Paper tab in the Printing Preferences (see "Opening printing
preferences" on page 36).
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2. Learning the Basic Usage