command specified by <B>command</B> option.
It is typically used in conjuntion with <B>armcommand</B>, <B>repeatdelay</B> and
<B>repeatinterval</B>.
</DD>
</DL>
<DL><DT><A NAME="-height"><B>-height</B></A></DT>
<DD>

Specifies a desired height for the Button.
If an image or bitmap is being displayed in the Button then the value is in
screen units;
for text it is in lines of text.
If this option isn't specified, the Button's desired height is computed
from the size of the image or bitmap or text being displa