However, obtaining the curl of the above result, and then applying VPOTENTIAL to it again will give the same result.

See also: CURL, POTENTIAL

VTYPE

Type:

Command

 

 

Description:

Variable Type Command: Returns the type number of the object contained in the named variable.

 

If the named variable does not exist, VTYPE returns –1.

 

 

For a table of the objects’ type numbers, see the entry for TYPE.

 

Access:

!°TYPE LLVTYPE

( °is the left-shift of the Nkey).

Input/Output:

 

 

 

 

 

 

 

 

 

 

 

Level 1/Argument 1

 

Level 1/Item 1

 

 

 

 

 

 

 

'name'

→

ntype

 

 

:nport : namebackup

→

ntype

 

 

:nport : nlibrary

→

ntype

See also:

TYPE

 

 

 

 

 

 

 

 

 

 

 

*W

Command

 

 

Type:

 

 

Description: Multiply Width Command: Multiplies the horizontal plot scale by xfactor. *W is provided for compatibility with the HP 48. *W is the same as SCALEW; see its listing for details.

WAIT

Type: Command

Description: Wait Command: Suspends program execution for specified time, or until a key is pressed. The function of WAIT depends on the argument, as follows:

•Argument x interrupts program execution for x seconds.

•Argument 0 suspends program execution until a valid key is pressed (see below). WAIT then

returns xkey, which defines where the pressed key is on the keyboard, and resumes program execution.

xkey is a three-digit number that identifies a key’s location on the keyboard. See the entry for ASN for a description of the format of xkey.

•Argument –1 works as with argument 0, except that the currently specified menu is also displayed.

!, …, ~, ~!, and ~…are not by themselves valid keys.

Arguments 0 and –1 do not affect the display, so that messages persist even though the keyboard is ready for input (FREEZE is not required).

Normally, the MENU command does not update the menu keys until a program halts or ends. WAIT with argument –1 enables a previous execution of MENU to display that menu while the program is suspended for a key press.

Access: !°LIN WAIT

( °is the left-shift of the Nkey).

3-272 Full Command and Function Reference