The following options are specific to forms.
If you have a label that is going to have several strings of different lengths displayed in it, you may want to use the -recomputeSize FALSE option. This option will ensure that the label does not resize every time a new string is displayed. If you allow the label to resize, the form will also resize around it unless you have specified the -resizable FALSE option on your form. When you use -recomputeSize FALSE on your label, make sure that your label is the size you want it to be when it is created. You can do this by using attachments to the form or other widgets, or you can specify the width of the label.