Selection Set Composing Modes

Selection Set Composing Modes

There are three modes of composing a selection set: Add, Remove and Single.

Single		Selecting data in Single mode deselects all previously selected data in the current image. With Single turned on, the selection set in the current document consists of the data selected during the latest selecting step or nothing. To turn Single mode on, click the button on the Raster Selection toolbar. With the SHIFT button pressed, Single mode turns to Add mode. In this mode objects can also be selected automatically when drawing. Selecting is controlled by settings in Command Setup dialog, see Command setup
Add		Raster data selected in Add mode is added to the current selection set. To turn Add Mode on, click the button on the Selection toolbar. In Add mode, composition of the selection set can consist of several steps, every step being a single selection operation. On every step the selection methods can be varied. With the SHIFT button pressed, Add mode turns to Remove mode. Use this mode to automatically select objects when drawing. Selecting is controlled by settings in Command Setup dialog, see Command setup
Remove	B3	Use Remove mode to remove selected data from the selection set. To turn Remove mode on, click the button on the Raster Selection toolbar.With the SHIFT button pressed, Remove mode turns to Add mode. Usually a single object is first selected, and then more objects added to the selection set, and after that some of the previously selected data is removed from the selection. Data can be removed from the selection set using the same methods as when selecting it. When data is removed from the selection set it is no longer highlighted.
Selecting/Unselecting all		Two further operations add convenience and flexibility to usage of selection modes: Select All and Unselect All. Both operations are represented by commands in the Edit menu and buttons on Select toolbar.

In Vector selection mode pressing Select All yields all vector objects, but not images.
In Raster selection mode pressing Select All yields all rasters.
In Hybrid selection mode pressing Select All selects all vector objects and all rasters, not supplied with borders. Hybrid and other modes of selection are also influenced by Disable Hybrid Objects On/Off toggle (see Disabling hybrid objects for selection).