Lexmark C912 User Reference Manual page 37

For Mac OS X v10.2:
1
In your program, go to File
2
Under Format for, select the Any Printer option.
3
Under Settings, select Custom Paper Size, and then click New.
4
Enter the name for your custom paper size.
5
Enter the appropriate dimensions and margins.
6
Click Save.
7
Click OK.
8
In your program, go to File
9
Under Format for, make sure that the Any Printer option is selected.
10
Under Paper Size, select the custom size you want to use.
11
Print your document.
Printing
Page Setup.
Page Setup.
Printing with custom size specialty media
32