59). Auxiliary lines not only snap to the edges of the current layer or selection (up, down, left, and right), but they also align with the horizontal or vertical center (of the current layer or selection). The reverse is also true: the same selections and layers will also be adsorbed to existing auxiliary lines (edge ​​and center). Note: The guides do not stick to the background layer. And to achieve the above functions, first open the [Ctrl+Shift+;] (View/Snap To Guides) option. Tip: To find the center of the picture, you can create a new [Ctrl+Shift+N] (Layer/New Layer) and fill it with [Shift+Backspace] (Edit/Fill) and then snap the guideline to the vertical and horizontal centers.
60). Navigator and Action Skills [Note 1]
Many times, using the keyboard to control the navigation is faster than using a mouse. Here are some commonly used Navigator hotkeys:
Home = To the upper left corner of the canvas
End = to the lower right corner of the canvas
PageUp = scroll up one page
PageDown = Scrolls the canvas down one page
Ctrl+PageUp = scroll the canvas to the left
Ctrl+PageDown = Scrolls the canvas to the right by one page
Shift+PageUp = scroll the canvas up 10 pixels
Shift+PageDown = Scrolls the canvas down 10 pixels
Ctrl+Shift+PageUp = Scroll the canvas 10 pixels to the left
Ctrl+Shift+PageDown = Scroll the canvas 10 pixels to the right
61). Use Ctrl+Tab/Ctrl+F6 to switch between multiple documents (or you can use the Window menu), which is very convenient!
62). Use the restore command [F12] (File/Revert) to restore the current document to the last saved state. caveat! In Photoshop 5.0, the restore command will clear the history at the same time! This means that all changes will be lost once the restore command is used last time! Photoshop 5.5 corrects this.
63). CHANNEL also has its default corresponding hotkey. This makes adding, subtracting, and intersecting between the selections/masks stored as channels very quick and easy. Here are some common patterns:
RGB color CMYK color index color
Ctrl+"~"= RGB
Ctrl+1 = Red
Ctrl+2 = Green
Ctrl+3 = ?#123;
Ctrl+4 = other channel
Ctrl+9=other channel
Ctrl+"~" = CMYK
Ctrl+1 = Cyan
Ctrl+2 = magenta
Ctrl+3 = Yellow
Ctrl+4 = Black
Ctrl+5 = other channel
Ctrl+9=other channel
Ctrl+1 = Index
Ctrl+2 = other channel
Ctrl+9=other channel
For example, to create a selection to represent the intersection of channel 7 and channel 9, press Ctrl+Alt+7 (load channel 7 as a selection) and then press Ctrl+Alt+Shift+9 (cross channel 9 again).