All sheets of a drawing are iterated through and the tasks within this grouping are performed for each sheet.
Single-model drawings: The active drawing model is retained.
Multi-model drawings: The drawing frame (if available) is used to identify the model that was active when the drawing frame was set. This model is then set as the active model in the drawing and the task list for the sheet is edited. After all sheets have been processed, the active model of the drawing is reset.
Use current model for frameless sheets
When acitvated, this model is used as a basis.
