In architectural dimension strings the side dimension lines are usually used to "link" them with additional strings. Therefore, the side extension lines should be longer than other lines. The Edit extension lines command is used to shorten or lengthen the dimension side extension lines. The need to conduct such an operation may be needed when user makes various editing changes that regard dimensions such as: deleting, moving, dimensions copying etc.
Procedures
1.
Run the Edit extension lines 
command.
2. Click on any dimension that was created with CADprofi in order to shorten/lengthen the side extension line.
3. (Optional) Click on next dimension to edit it.
4. Press the Esc key or click the right mouse button to end the command.
View before and after the side extension lines were lengthen