PrintEnv - I've always thought that it was strange that you can compose and print a standard business letter with your Newton, but when it comes time to create the envelope, you are left with no way to print in landscape (sideways) printer mode. Thus you have to hand write the envelope (ugh). PrintEnv addresses this problem. 

As you will see, it simply displays a small window in which you write the name and address of the person receiving the letter, and prints a standard business envelope when you tap "Print". PrintEnv 1.0 allows you to print a standard business envelope with your return address on an HP-compatible printer. Written in NS Basic, PrinEnv requires: NOS 2.0, a serial connection to the printer, and the NS Basic runtime file. Freeware.