To use lximage use the arrow to the right to view the next file in the folder and the arrow to the left to view the previous folder. To open a new picture press the open button which looks like a blue folder with a piece of paper in it. To save the file as something press the button that looks like a floppy disk.
Version
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Lubuntu ships with version 0.7.0 or lximage.
How to launch
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To launch lximage from the menu -> graphics - > lximage or run lximage-qt from the command line.
To launch skanlite turn on your scanner and that it is connected to your computer. To launch the application go to the menu -> graphics -> skanlite or run skanlite from the command line.
To view how much RAM is being used on your system is under mem and then a [ number based on how many Gigabytes of memory. The Swap line lists how much swap is used. The numbers going down with a bar with a percentage next to them display useage on each of your cpu cores.
Version
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Lubuntu ships with version 2.2.0 of htop.
How to launch
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To launch htop from the menu -> system tools -> htop with the Icon that looks like the green H made out of text.
To open a new tab go to the file menu -> new tab or press control shift t with the button that looks like a +. To close a tab press the X button near the right hand side of the tab.
Version
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Lubuntu ships with version 0.9.0 of qterminal.
How to launch
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To launch qterminal in a normal window go to the menu -> System Tools -> qterminal or run qterminal from the command line. To launch a drop down version of Qterminal from the menu -> System Tools -> qterminal drop down or run qterminal -d from the command line.