From AutoCAD Help: Customization Guide, Custom Menus, Toolbars, Create Toolbars, General Toolbar Definition:
The toolbar definition uses the keyword Toolbar followed by a series of options contained in parentheses.
TAG1 [Toolbar ("tbarname", orient, visible, xval, yval, rows)] The options are as follows:
tbarname
The string that names the toolbar. The string must include alphanumeric characters with no punctuation other than a dash (-) or an underscore (_). This name along with the alias enables the toolbar to be referenced programmatically.
orient
The orientation keyword. The acceptable values are Floating, Top, Bottom, Left, and Right and are not case-sensitive.
visible
The visibility keyword. The acceptable values, Show and Hide, are not case-sensitive.
xval
A numeric value specifying the X coordinate in pixels, measured from the left edge of the screen to the left side of the toolbar.
yval
A numeric value specifying the Y coordinate in pixels, measured from the top edge of the screen to the top of the toolbar.
rows
A numeric value specifying the number of rows.
Bob