SUB

Extracts a sub-object—a portion of a list, matrix, or

 

graphic from object—and stores it into name. start and

 

end are each specified using a list with two numbers for

 

a matrix, a number for vector or lists, or an ordered pair,

 

(X,Y), for graphics.

 

SUB name;object;start;end:

SWAPCOL

Swaps Columns. Exchanges column1 and column2 of the

 

specified matrix.

 

SWAPCOL name;column1;column2:

SWAPROW

Swap Rows. Exchanges row1 and row2 in the specified

 

matrix.

 

SWAPROW name;row1;row2:

Print commands

 

These commands print to an HP infrared printer, for

 

example the HP 82240B printer.

PRDISPLAY

Prints the contents of the display.

 

PRDISPLAY:

PRHISTORY

Prints all objects in the history.

 

PRHISTORY:

PRVAR

Prints name and contents of variablename.

 

PRVAR variablename:

 

You can also use the PRVAR command to print the

 

contents of a program or a note.

 

PRVAR programname;PROG:

 

PRVAR notename;NOTE:

Prompt commands

BEEP

Beeps at the frequency and for the time you specify.

BEEP frequency;seconds:

Programming

16-25