User`s guide

Notations and Conventions
This section describes various notations used throughout this manual and conventions
observed by the V+ system.
Keyboard Keys
The system keyboard is the primary input device for controlling the V+ system. Graphics-
based systems use a PC-style keyboard and high-resolution graphics monitor.
NOTE: The word terminal is used throughout this manual to refer either to a computer
terminal or to the combination of a graphics monitor and a PC-style keyboard.
Input typed at the terminal must generally be terminated by pressing the Enter or Return
key. (These keys are functionally identical and are often abbreviated with the symbol ↵.)
S+F9 means to hold down the Shift key while pressing the F9 key.
Ctrl+R means to hold down the Ctrl key while pressing the R key.
The keys in the row across the top of the keyboard are referred to as function keys. The V+
SEE program editor and the V+ program debugger use some of them for special functions.
NOTE: The Delete and Backspace keys can always be used to erase the last character
typed. The Delete options associated with the F14 key on a Wyse terminal are used only
by the SEE editor and the program debugger.
Uppercase and Lowercase Letters
You will notice that a mixture of uppercase (capital) and lowercase letters is used throughout
this manual when V+ operations are presented. V+ keywords are shown in uppercase letters.
Parameters to keywords are shown in lowercase. Many V+ keywords have optional
parameters and/or elements. Required keyword elements and parameters are shown in
boldface type. Optional keyword elements and parameters are shown in normal type. If there
is a comma following an optional parameter, the comma must be retained if the parameter is
omitted, unless nothing follows. For example, the BASE operation (command or instruction)
has the form
BASE dx, dy, dz, rotation
where all of the parameters are optional.
To specify only a 300-millimeter change in the Z direction, the operation can be entered in
any of the following ways:
BASE 0,0,300,0
BASE,,300,
BASE,,300
Notations and Conventions
V+Language User's Guide, v17.0
Page 18