class = "w_txt_btn"

format=0

widget without toggle button (default)

format=1

widget with toggle button

menu=string

name of menu to be displayed when button is pressed OR...

command=string

name of command string to be sent to the application OR...

form=string

name of form to be displayed when button is pressed

col=num

number of characters displayed in text input area

num_char=num

optional maximum number of characters allowed on input