You may zoom in and out the main image with mouse wheel.
You may pan the main image with mouse dragging while holding space bar key pressed.
To add a new layer please simple click and drag with your right mouse button over the page area.
To add a new layer over existing layers please press Alt key while right clicking over layers.
To make a multiply selection over existing layers please press Alt key while left clicking over the layers.
When you right click over specific layer of the image in the main window, you will activate context
menu. To activate additional Popup Menu please right click over specific layer with Ctrl key pressed. As alternative
way to activate this menu please press Left mouse button, then press Right mouse button (while left button
is still pressed).
To insert an image into the layer you may drag the image from Windows Explorer and drop it on the layer.
To modify cropping position of dropped image you may use keyboard keys. You may use following keys:
Q - to crop image Left-Top
W - to crop image Center-Top
E - to crop image Right-Top
A - to crop image Left-Center
S - to crop image Center-Center
D - to crop image Right-Center
Z - to crop image Left-Bottom
X - to crop image Center-Bottom
C - to crop image Right-Bottom
Shift - to fit image into layer
Ctrl - to fit layer to image