Notepad switches
From Source of below info:
...command line arguments notepad takes
/A <filename>open file as ansi/W <filename>open file as unicode/P <filename>print filename/PT <filename> <printername> <driverdll> <port>/.SETUPsome weird stuff is happening i cant identify...
/S suppresses the file-not-found prompt (you still get another prompt).
You can also use CMD.exe to control window size (and pipe input):
cmd.exe /c start /max notepad.exe c:/temp/toto.txt