This application is used to generate horizontal and vertical viewport sequences from the model space into the layout area.
The time-consuming positioning of the viewports in the layout-space is done by this program.
A function is used to generate viewport references from the layout - viewports into the model space. In the model space, these viewports are represented by rectangles on a specific layer. This reference allows you to change the position of the drawing objects in the model-space and to update the layout-space.
Functions for locking and unlocking the viewports - freezing and thawing of the viewport-layers are also included.