I would like to propose the following improvements to the Redlines feature:

1. Allow the unit of "Area" to be changed from ft² to m²
   Many users prefer to use square meters (m²). For example, when the Base Units are set to Metric, I would like the unit to automatically switch to m².

2. Allow the text position in "Textbox" to be adjustable
   Currently, the text is fixed to the top-left corner of the box, which may overlap with other text elements on the floor plan. I would like to make the text position movable to avoid such overlaps.

3. Allow the text position in "Arrow Textbox" to be adjustable
   At present, the text is fixed to the top-left corner, which can cause it to overlap with the arrow when it points to the left. I would like to make the text position freely adjustable to prevent such conflicts.