User Guide:

• Ctrl + `O`: load a file
• Ctrl + Shift + `O`: load a diff file
• Mouse Wheel: pipeline move up/down
• Mouse Down and Move: drap pipeline
• Ctrl + Mousue Wheel: zoom in/out
• Alt + Mousue Move: calculate slope
• Ctrl + `-` or `=`: zoom in/out
• Ctrl + `A`: hide/show flushed insns
• Ctrl + `F`: show/hide search panel
• Ctrl + `G`: show/hide user guide
• Ctrl + `Z`: move pipeline to start point and hide label panel or revert