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 [form.]{combobox. | textbox.}SelLength[ = length%]
 [form.]{combobox. | textbox.}SelStart[ = point%]
 [form.]{combobox. | textbox.}SelText[ = stringexpression$]
 
 Usage Notes
   ■ Use the SelLength, SelStart, and SelText properties for:
     • Setting the cursor position
     • Establishing an insertion range
     • Selecting substrings in a control
     • Clearing text
 
   ■ Setting SelLength to less than 0 causes a run-time error. Attempting to
     set SelStart to a value less than zero generates the run-time error
     message, "Invalid property value."
 
   ■ Setting SelStart greater than the text length sets the property to the
     existing text length.
 
   ■ Changing SelStart sets SelLength to 0.
 
   ■ Setting SelText replaces the currently selected text and places the
     cursor just after the inserted text. SelLength is always zero after
     this operation.