From MorphOS Library
NewShell - Starts a new interactive CLI/SHELL on the system
WINDOW - window specifications (see below) FROM - script to execute at shell startup (default is S:Shell-Startup)
Using the WINDOW parameter, you specify the initial dimensions, location, and title of the window with this syntax:
x number of pixels from the left edge of the screen to the left border of the Shell window. Use a value (//) to specify the minimum possible pixels. y number of pixels from the top of the screen to the top of the Shell window. Use no value (//) to specify the minimum possible pixels. width width of the Shell window, in pixels. Use no value (//) to specify the full width of the screen. height height of the Shell window, in pixels. Use no value (//) to specify minimum possible height. title text that appears in the Shell window title bar.
Options can be one or more of:
AUTO The window automatically appears when the program needs input or produces output. With the Shell window, it opens for input immediately. The window can only be closed with the EndShell command. Selecting the Shell's close gadget closes the window, but it re-opens immediately since it is expecting input. ALT The window appears in the specified size and position when the zoom gadget is clicked. The four parameters must be separated with slashes (for example, ALT30/30/200/200). BACKDROP The window appears on the backdrop, behind all the Ambient windows. This Shell window cannot be brought to the front of the screen; you have to resize the Ambient windows to see it. CLOSE The window has all the standard gadgets, including a close gadget. This is the default for Shell windows, but you must specify it to get a standard Shell if you use the WINDOW argument. INACTIVE The window opens, but is not made the active window. NOBORDER The window opens without any left or bottom window border. Only the zoom, depth, and sizing gadgets are available. NOCLOSE The window does not have a close gadget. If you open a console normally, there is no close gadget. If you open a console using the AUTO option, there is automatically a close gadget on the window. NODEPTH The window has no window depth gadget. NODRAG The window cannot be dragged. It has zoom, depth and sizing gadgets, but no close gadget. NOSIZE The window only has a depth gadget. SCREEN The window opens on a public screen. The screen must already exist. You must specify the name of the screen after the SCREEN keyword. SIMPLE If you enlarge the window, the text expands to fill the newly available space, allowing you to see text that had been scrolled out of the window. This is the default for standard Shells. SMART If you enlarge the window, the text does not expand to fill the newly available space. This saves memory. WAIT The window can only be closed by selecting the close gadget or entering Ctrl+. If WAIT is the only option, there is no close gadget.
SYS:> NewShell "CON://640/480/My Shell/CLOSE"
Opens a shell window in top-left corner, of size 640x480, a close gadget and of name 'My Shell'.