When a TextBox control is placed on the form as explained in the following paragraphs, the control is fully automatic updated when the value of the tagname/control is changed on the board as described in the general part of this chapter. It is also possible to right click on the control for masking and forcing I/O. This is what happens for digital I/O (as an example):
Right clicking on the digital input control presents a context menu for controlling the I/O. It is possible to mask the digital input with "0" or "1" and it is possible to remove the mask again. As you can see, the tagname is placed on top of the context menu (for information). When hovering over the control, the metadata is presented as information as a tooltip.
Right clicking on the digital output control presents a context menu for controlling the I/O. It is possible to force the digital output with "0" or "1" and it is possible to return to automatic mode.