without clicking the mouse button, but to press and release nature of keyboard buttons.... it acts like the below....
1) If we just press and release the Alt button on the keyboard without clicking using the mouse left click or any click....
and once released.... it knows that you wanted to select only Text... then if you draw the region or tried to select anything,
here only the text is selected.
2) If we just press and release the Ctrl button on the keyboard without clicking using the mouse left click or any click....
and once released.... it knows that you wanted to select only Vector... then if you draw the region or tried to select anything,
here only the Vector Elements are selected. (Other than Text and Guidelines.... rest of all the elements are selected)
3) If we just press and release the Shift button on the keyboard without clicking using the mouse left click or any click....
and once released.... it knows that you wanted to select only Guidelines... then if you draw the region or tried to select anything,
here only the Guides are selected.
4) If we just press and release the Ctrl+ Shift button on the keyboard without clicking using the mouse left click or any click....
and once released.... it knows that you wanted to select only Nodes (without switching to Shape Tool) ... then if you draw the
region or tried to select anything, here only the nodes are selected.
5) If we just press and release the Alt + Shift button on the keyboard without clicking using the mouse left click or any click....
and once released.... it knows that you wanted to switch from rectangle region to freehand lasso region.... vice versa
6) If we just press and release the Ctrl + Alt button on the keyboard without clicking using the mouse left click or any click....
and once released.... it knows that you wanted to center the screen without altering their positions.
7) If you hold down and release Ctrl + Shift + Alt..... is the default. which acts to select all as you draw.